Re: [Emc-users] Mister for small mill
Sounds like you have an aquarium air valve. Find a hobby shop that sells models that use engines. Ask for a mixture needle assembly. Most shops have a stack of broken models out the back that they raid for parts. Generally the needle valves have a 1/8 hose barb on one end and a thread on the other that screws into the carb. They give very fine control over the flow. If you find a good shop they may well have remote needle valves for aircraft. These have two hose barbs. Les Without a doubt. The so-called needle valve I got from Lowes didn't want to shut off, so I took it apart to discover there was nothing needle about it. The reason it wouldn't turn off is that the threads in the body weren't tapped deep enough, and I had to force it the last half turn to actually get to a seated condition. ATM it is open maybe 2 degrees from screwed down tight, so the oil is just sort of seeping through it and that seems to be more than enough to keep the mill and work wet. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
Gene, Can't imagine why you'd want to stand in an inch of water to soften brass ;-} You answered your own question really - just get it hot and leave it - it will be soft. Better still, use copper. Now, needle valves - think laterally - where are they used - carburettors do you have an old carburettor hanging about or, better still, an old model aero engine which will have a needle valve in a bit of brass tube for a carburettor - strip it out and mount it crosswise in your bigger brass tube and you have a ready made atomiser.. Ian -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Friday 20 November 2009, Leslie Newell wrote: Sounds like you have an aquarium air valve. Or an ice-maker shutoff. :) Find a hobby shop that sells models that use engines. Ask for a mixture needle assembly. Most shops have a stack of broken models out the back that they raid for parts. Generally the needle valves have a 1/8 hose barb on one end and a thread on the other that screws into the carb. They give very fine control over the flow. If you find a good shop they may well have remote needle valves for aircraft. These have two hose barbs. I'll do that the next time I get to Bridgeport. although I believe his model business has largely transitioned to the battery pack powered stuff, racing 4 wheelers etc + electric trains in smaller gauges. He has never had much of a selection of the glow plug engines visible. Thanks Les. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp I do not know whether I was then a man dreaming I was a butterfly, or whether I am now a butterfly dreaming I am a man. -- Chuang-tzu -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Friday 20 November 2009, Ian W. Wright wrote: Gene, Can't imagine why you'd want to stand in an inch of water to soften brass ;-} The cartridge case, not me obviously. ;) You answered your own question really - just get it hot and leave it - it will be soft. Better still, use copper. No copper available at that gittin place. But, next time I go to the old transmitter, I recall there are some failed thermometers as it monitored the water temps with dial thermometers with remote bulbs, that capillary tube would make a decent piece of raw material. And it is copper. Now, needle valves - think laterally - where are they used - carburettors True, but in small engines you have to find one 20-40 years old now since the EPA got into the regulating business, they are all fixed jets now, and usually too damned lean, and plugged up tight by corrosion after sitting dry for the winter so they get to sell you a new $50 one come spring. But its a thought I'll keep in mind. do you have an old carburettor hanging about or, better still, an old model aero engine which will have a needle valve in a bit of brass tube for a carburettor - strip it out and mount it crosswise in your bigger brass tube and you have a ready made atomiser.. I don't believe we need that fine an atomizer, that is how we would load the breathing air up. I think the idea here seems to be the injection directly into the center of the air stream, of a small amount that eventually becomes a big enough droplet hanging off the end of the tube so that it gets carried away in larger droplets that are ballisticly delivered to the work/mill interface, about a 1.25 distance with the way I have it mounted.. So the work stays wet, without a lot of it hanging in the air. Air pressures are in the 15-50 psi range, just enough to blow most of the chips away when they are sticky with the oil. The air jet is formed by the clearance between the OD of the 1/16 tube, and a 5/64 hole the tube is projecting through, by about 1/16. The small tubes end then is in the center of this air stream and is apparently subjected to a slight siphoning vacuum although I haven't tried to measure it. In any event, the oil reservoir has the same pressure in it as the air flows through it, functioning as a filter of sorts, and the oil exits its screw-on bowl via the drain fitting on the bottom. Heavy duty flow restriction required else it will dump the bowls contents onto the mill and workpiece in a second or so after air pressure is applied. Un-screw the bowl to add oil. So far the hose barb has slipped in the hose as the bowl is rotated, but I suspect I'll have to find some mini-clamps to keep it from blowing off under pressure eventually. Thanks Ian. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp knowledge, n.: Things you believe. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
One idea I have been meaning to try on my mister is to use a peristaltic pump, maybe powered by a stepper and EMC2 stepgen, to meter the fluid into the air stream. This way, I can better control the fluid quantity rate and I won't get fluid drain-back, so the fluid will come on instantly. Inkjet printers often have a small pump for cleaning the head. Another thing that comes to mind, on my Hardinge lathe and Shizuoka mill, any hint of water seems to cause rust, so I won't be using any water based anything around my machines. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
2009/11/19 Gene Heskett gene.hesk...@gmail.com: I even tried to swage it down onto the needle with a hammer and anvil, but I can see that is just as futile. So I'm going to sleep on it unless someone has a better idea. Will an ER collet crimp the tube down? I think I would be trying 2-part epoxy, dabbed on the needle before insertion. That way there shouldn't be any glue near either tip. However I am not sure that I have your arrangment properly visualised. -- atp -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Thursday 19 November 2009, Andy Pugh wrote: 2009/11/19 Gene Heskett gene.hesk...@gmail.com: I even tried to swage it down onto the needle with a hammer and anvil, but I can see that is just as futile. So I'm going to sleep on it unless someone has a better idea. Will an ER collet crimp the tube down? My collet's for the mill stop at 1/8 unforch. I think I would be trying 2-part epoxy, dabbed on the needle before insertion. That way there shouldn't be any glue near either tip. However I am not sure that I have your arrangment properly visualised. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp All articles that coruscate with resplendence are not truly auriferous. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Thursday 19 November 2009, Andy Pugh wrote: 2009/11/19 Gene Heskett gene.hesk...@gmail.com: I even tried to swage it down onto the needle with a hammer and anvil, but I can see that is just as futile. So I'm going to sleep on it unless someone has a better idea. Will an ER collet crimp the tube down? I think I would be trying 2-part epoxy, dabbed on the needle before insertion. That way there shouldn't be any glue near either tip. However I am not sure that I have your arrangment properly visualised. There are a couple of pix of it on my web page Andy. Look for *mister.png's, but don't come in through the main 'gene' page, go direct to gene/emc as I haven't updated the indexing yet. http://gene.homelinux.net:85/gene/emc should get you there. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp Mr. Universe: They can't stop the signal, Mal. They can never stop the signal. --Serenity -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
Gene, I think your brain's working too hard!! You probably won't have much success with Insulin needles as the length of thin tube will act as a brake on the oil. One place you can find really small bore tube is on an old fridge - the thermostat bulb which is in the frig compartment is usually coupled to the gubbins in the back with a very small bore copper tube - its full of alcohol or some such.. A short length of this glued into a bigger tube would probably serve your purpose. If you go down this route, I would tap a pointed scriber into the end of the little tube you are going to stick into the bigger tube to make a tapered lead in for the fluid. To make a swage for any other tube, use a little centre drill - I have them down to about 1/8 OD. Put a bit of steel rod in the lathe chuck and drill a centre drill hole in it, then hold the tube you want to narrow in the tailstock, lubricate the centre drilled hole and, with the lathe running, feed the tube into the hole with pressure from the tailstock. When you've closed it up too much you can file the end back a bit till the hole is the right size. Ian _ Ian W. Wright Sheffield UK -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Thursday 19 November 2009, Ian W. Wright wrote: Gene, I think your brain's working too hard!! :) Probably so Ian. You probably won't have much success with Insulin needles as the length of thin tube will act as a brake on the oil. There seems to be plenty of pressure to make it flow. One place you can find really small bore tube is on an old fridge - the thermostat bulb which is in the frig compartment is usually coupled to the gubbins in the back with a very small bore copper tube - its full of alcohol or some such.. A short length of this glued into a bigger tube would probably serve your purpose. If you go down this route, I would tap a pointed scriber into the end of the little tube you are going to stick into the bigger tube to make a tapered lead in for the fluid. Would that not tend to make a piece of dirt wedge itself in? We may not intend to get dirt in the oil, but Murphy is always looking over my shoulder. To make a swage for any other tube, use a little centre drill - I have them down to about 1/8 OD. Put a bit of steel rod in the lathe chuck and drill a centre drill hole in it, then hold the tube you want to narrow in the tailstock, lubricate the centre drilled hole and, with the lathe running, feed the tube into the hole with pressure from the tailstock. When you've closed it up too much you can file the end back a bit till the hole is the right size. I thought of that, but wondered how well the superglue I have the 2nd one assembled with would do when it has that push against it in shear mode, its 1/16 tube about 2 long, with concentric larger tubes glued to it until its large enough for the 0.170 bore of the vinyl hose from the reservoir, which is pressurized at the same pressure as the air nozzle is getting. If I open the valve, I can put 2 oz of Vactra #2 on the work and mill in 2 seconds flat, so the 1/16 OD pipe is still way too big a bore. I do have the center drill that size but didn't think the included would be suitable to swaging brass. Its worth a try though, all I can do is break the glue loose. I believe my dead center might even rest in the hole in the back end of that inside pipe. I'll go try it, thanks Ian. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp Without life, Biology itself would be impossible. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Thursday 19 November 2009, stus...@gmail.com wrote: Glue the needle in place - then cut it off That is also a thought, use Ian's idea to swage it down to nearly zip, use the needles piercing point to bore it to fit the needle, and then glue the needle in and wear the point off with some of Mr. Russel's fine stone. Trying to cut it will probably just crush it as its only 0.012 OD. Thanks. These are all good ideas. Sent via BlackBerry from T-Mobile -Original Message- From: Ian W. Wright watchma...@talktalk.net Date: Thu, 19 Nov 2009 19:44:45 To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Mister for small mill Gene, I think your brain's working too hard!! You probably won't have much success with Insulin needles as the length of thin tube will act as a brake on the oil. One place you can find really small bore tube is on an old fridge - the thermostat bulb which is in the frig compartment is usually coupled to the gubbins in the back with a very small bore copper tube - its full of alcohol or some such.. A short length of this glued into a bigger tube would probably serve your purpose. If you go down this route, I would tap a pointed scriber into the end of the little tube you are going to stick into the bigger tube to make a tapered lead in for the fluid. To make a swage for any other tube, use a little centre drill - I have them down to about 1/8 OD. Put a bit of steel rod in the lathe chuck and drill a centre drill hole in it, then hold the tube you want to narrow in the tailstock, lubricate the centre drilled hole and, with the lathe running, feed the tube into the hole with pressure from the tailstock. When you've closed it up too much you can file the end back a bit till the hole is the right size. Ian _ Ian W. Wright Sheffield UK --- --- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users --- --- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp Accordion, n.: A bagpipe with pleats. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Thursday 19 November 2009, Gene Heskett wrote: On Thursday 19 November 2009, stus...@gmail.com wrote: Glue the needle in place - then cut it off That is also a thought, use Ian's idea to swage it down to nearly zip, use the needles piercing point to bore it to fit the needle, and then glue the needle in and wear the point off with some of Mr. Russel's fine stone. Trying to cut it will probably just crush it as its only 0.012 OD. Thanks. These are all good ideas. I gave it a try, but this brass is too hard already. And trying to do that to a 2 piece of it means I'll have to baby a 1/16 drill bit through a piece of steel about 1/8 shorter just to brace the tubing against buckling when I put the pressure on. So with what I was able to do, I may have cut the area of the hole by a few percentage points, but then it buckled despite my efforts to brace it with some pliers. And the diameter booster sleeves on the rear of it, came unglued, so they got cleaned up and re glued. What is the best procedure to anneal just the last 1/8 of this tubing, it might work if I can get it dead soft again. Sent via BlackBerry from T-Mobile -Original Message- From: Ian W. Wright watchma...@talktalk.net Date: Thu, 19 Nov 2009 19:44:45 To: emc-users@lists.sourceforge.net Subject: Re: [Emc-users] Mister for small mill Gene, I think your brain's working too hard!! You probably won't have much success with Insulin needles as the length of thin tube will act as a brake on the oil. One place you can find really small bore tube is on an old fridge - the thermostat bulb which is in the frig compartment is usually coupled to the gubbins in the back with a very small bore copper tube - its full of alcohol or some such.. A short length of this glued into a bigger tube would probably serve your purpose. If you go down this route, I would tap a pointed scriber into the end of the little tube you are going to stick into the bigger tube to make a tapered lead in for the fluid. To make a swage for any other tube, use a little centre drill - I have them down to about 1/8 OD. Put a bit of steel rod in the lathe chuck and drill a centre drill hole in it, then hold the tube you want to narrow in the tailstock, lubricate the centre drilled hole and, with the lathe running, feed the tube into the hole with pressure from the tailstock. When you've closed it up too much you can file the end back a bit till the hole is the right size. Ian _ Ian W. Wright Sheffield UK -- - --- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- - --- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp Oh, yeah, life goes on, long after the thrill of livin' is gone. -- John Cougar, Jack and Diane -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
2009/11/19 Gene Heskett gene.hesk...@gmail.com: What is the best procedure to anneal just the last 1/8 of this tubing, it might work if I can get it dead soft again. Just get it hot and keep it that way for a while. There is no phase transition to worry about with brass. -- atp -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
I would be concerned about having a very fine needle sticking out. It would be very vulnerable. I have no problems with a piece of 1/16 OD tube and a needle valve. You are going to need a needle valve anyway because some jobs need more oil than others. Les Gene Heskett wrote: On Thursday 19 November 2009, stus...@gmail.com wrote: Glue the needle in place - then cut it off That is also a thought, use Ian's idea to swage it down to nearly zip, use the needles piercing point to bore it to fit the needle, and then glue the needle in and wear the point off with some of Mr. Russel's fine stone. Trying to cut it will probably just crush it as its only 0.012 OD. Thanks. These are all good ideas. Sent via BlackBerry from T-Mobile -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
As far as I know you don't have to hold it hot for very long. Get it red, quench and job done. Quenching in battery acid helps remove the black oxide but beware of the fumes. Les Andy Pugh wrote: 2009/11/19 Gene Heskett gene.hesk...@gmail.com: What is the best procedure to anneal just the last 1/8 of this tubing, it might work if I can get it dead soft again. Just get it hot and keep it that way for a while. There is no phase transition to worry about with brass. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Thursday 19 November 2009, Andy Pugh wrote: 2009/11/19 Gene Heskett gene.hesk...@gmail.com: What is the best procedure to anneal just the last 1/8 of this tubing, it might work if I can get it dead soft again. Just get it hot and keep it that way for a while. There is no phase transition to worry about with brass. Ok. I was going by what I do for cartridge brass necks, which is warm them while standing in an inch of water, watching the color, and when the straw gets to the base of the neck, knock that one over into the cool water. That, while stress relieving it to prevent cracked necks, also leaves it fairly hard so it will grip the next bullet well. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp There is only one way to kill capitalism -- by taxes, taxes, and more taxes. -- Karl Marx -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
2009/11/20 Gene Heskett gene.hesk...@gmail.com: Ok. I was going by what I do for cartridge brass necks, which is warm them while standing in an inch of water, watching the color, and when the straw gets to the base of the neck, knock that one over into the cool water. That, while stress relieving it to prevent cracked necks, also leaves it fairly hard so it will grip the next bullet well. Quenching might put a bit of cold-work back into it. But perhaps cartridge brass is just hard. -- atp -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Thursday 19 November 2009, Leslie Newell wrote: I would be concerned about having a very fine needle sticking out. It would be very vulnerable. I have no problems with a piece of 1/16 OD tube and a needle valve. You are going to need a needle valve anyway because some jobs need more oil than others. Les Without a doubt. The so-called needle valve I got from Lowes didn't want to shut off, so I took it apart to discover there was nothing needle about it. The reason it wouldn't turn off is that the threads in the body weren't tapped deep enough, and I had to force it the last half turn to actually get to a seated condition. ATM it is open maybe 2 degrees from screwed down tight, so the oil is just sort of seeping through it and that seems to be more than enough to keep the mill and work wet. I also thought of soldering it shut, then using the needle to bore a hole in the solder, then glue the needle into the bored hole. Cut it off a sixteenth proud polish that to just proud of the solder should work. The needle itself is only 3/8 long once pulled from the plastic. However, if I could find a _real_ needle valve that would be even better. All I need is a good method of adjusting the flow anyway, which this valve sure as heck isn't. 10 degrees off the seat and its effectively wide open. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp dark Hey, I'm from this project called Debian... have you heard of it? Your name seems to be on a bunch of our stuff. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Fri, 2009-11-20 at 00:16 +, Andy Pugh wrote: 2009/11/20 Gene Heskett gene.hesk...@gmail.com: Ok. I was going by what I do for cartridge brass necks, which is warm them while standing in an inch of water, watching the color, and when the straw gets to the base of the neck, knock that one over into the cool water. That, while stress relieving it to prevent cracked necks, also leaves it fairly hard so it will grip the next bullet well. Quenching might put a bit of cold-work back into it. But perhaps cartridge brass is just hard. google C62000 and see what you get. HTH dave -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
Gentle persons: I know I'm a big worry wort but two things really bother me about misting. The first thing goes back to my days as a lab safety officer. Our lungs aren't really designed to deal with atomized organic oils. A Material Safety Data Sheet may say the oil has low toxicity but that probably isn't relevant to this issue. I don't want to breathe it. The finer the mist the bigger the problem because the deeper it can get (can you spell chemical pneumonia?). The second thing goes back to my days as a teenager when we thought explosions were pure fun. A fine mist of oil, even one with a high flash point, is a basic ingredient to an awesome flame (Case in point: anyone see the recent Myth Busters episode dealing with kitchen stove fires?) In my case, the only place in our townhouse my wife will let me put the tabletop mill I don't have yet is in our basement utility room, sharing space with a gas-fired water heater and a gas-fired furnace. Hmmm, not one but two sources of ignition. Like I say, I'm a big worry wort, but accidents are what happens just when you think everything is going fine. My first real summer job, as an engineering aide on a major construction project was 75-percent construction inspection and 25-percent recording accidents. What an eye-opener. Live long and prosper. Regards, Kent -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
If you really dont want mist in the air there was an article in an old magazine, I think HOME SHOP MACHINIST about building a solenoid operated pump with a nozzle held by a mag base and pointed at the work. It used a 555 timer IC to generate a tiny pump stroke every few seconds. This directed just a drop of coolant right on the tool edge, and with a simple knob you adjust the rate to get just enough coolant. This one has been 'on my list' for a while, I think its the best approach for a home shop. Someday Ill actually get around to it. ron ginger -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
If you are machining some of the softer grades of aluminum you need a pretty much constant flow of coolant. You don't need much but if it runs dry it can clog the cutter very quickly. Also if you are using carbide a sudden squirt of coolant could cause the cutting edges to crack. Les Ron Ginger wrote: If you really dont want mist in the air there was an article in an old magazine, I think HOME SHOP MACHINIST about building a solenoid operated pump with a nozzle held by a mag base and pointed at the work. It used a 555 timer IC to generate a tiny pump stroke every few seconds. This directed just a drop of coolant right on the tool edge, and with a simple knob you adjust the rate to get just enough coolant. This one has been 'on my list' for a while, I think its the best approach for a home shop. Someday Ill actually get around to it. ron ginger -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Wednesday 18 November 2009, Ron Ginger wrote: If you really dont want mist in the air there was an article in an old magazine, I think HOME SHOP MACHINIST about building a solenoid operated pump with a nozzle held by a mag base and pointed at the work. It used a 555 timer IC to generate a tiny pump stroke every few seconds. This directed just a drop of coolant right on the tool edge, and with a simple knob you adjust the rate to get just enough coolant. This one has been 'on my list' for a while, I think its the best approach for a home shop. Someday Ill actually get around to it. ron ginger And that is another thing I've been threatening to go into production of, round 'tuit's. I can't find the one I had 40 years ago. :) The idea of swaging the tip down to about zip got me to thinking, and the thoughts ran toward insulin needles, which are $1.89 a 10 pak at Wallies Pharmacy. That was fallback plan, brought on by my not being able to find a suitable female swage form for that small a pipe. I annealed it, then clamped a well polished 3/8 drill chuck on the last 1/16, tightened it up enough to start crushing the pipe, and gave it 4 or 5 turns. 3 times, but all I succeeded in doing was wearing it off without appearing to shrink the center hole. So I am now using 3x as much air already had a great plenty of that. So then I pulled the needle out of one of the shringes, bloody difficult cuz a 31 gauge needle is only .012 for OD. Hard to get a good grip even with suture clamps. Thinking about super gluing it, then realized that super glue, being about 1000x wetter than water, would probably seal up the inner passage of the needle long before it had filled the relatively huge space between the needles OD and the pipes ID. I even tried to swage it down onto the needle with a hammer and anvil, but I can see that is just as futile. So I'm going to sleep on it unless someone has a better idea. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp If you analyse anything, you destroy it. -- Arthur Miller -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
If you want to cheat on the orifice drilling - consider using a mig welder tip - a common Tweco tip comes in a .024 size and I have used that in a waste oil burner as an air jet. I soldered the tip into the ID of a piece of 1/4 copper tubing. Works great - and no small hole drilling. Want less of a hole? Perhaps smacking the tip with a hammer would work to compress the hole in the copper tip. Dave Gene Heskett wrote: On Monday 16 November 2009, Dave wrote: Misters bother me unless they are tuned just so you can put a big cloud in your shop in no time. Flood coolant might be messy also but it doesn't fog your shop and your lungs. There is some mention of people trying to use food oils on practicalmachinist.com and the residue drying to a sticky mess. http://www.practicalmachinist.com/vb/showthread.php/cold-air-gun-vs-162714p 3.html You might want take a sample of the mister oil you want to use and let it sit on a surface for a while and dry and see what you have afterwards. I'll do that. Olive seems to want to do that as I'm observing our skillets when they are a day old. I've done some work in a heat treat facility where they quench hot parts with various fluids and the fumes and mist in that place is really bad. Everything becomes sticky or oily. I'd be careful not to recreate that scene in the space around your machine! I don't intend to. I intend to rig a $20 vacuum with a throwaway paper bag on the downstream side. I use propylene glycol (aka pink RV antifreeze - you can drink the stuff in small quantities) in my bandsaw as a flood coolant and it works great. It doesn't get sticky, it doesn't freeze, and it has a corrosion inhibitor in it. $2.50/gallon in the fall when everyone puts it on sale. My new bandsaw is relegated to wood, and possibly venison. The old craftsman 12 has cut everything, including slices off the end of a 6 sq alu solid beam. I got it, nearly 2 feet long, several years ago at $1/lb, aka 40 dollars. I'm still making things from it. :) Dave -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
A couple observations on misters. When they are properly adjusted the amount of mist dispensed is tiny. A Bijur unit will take several seconds to puddle just 2-3 drops into your hand. The cooling is mostly from the air stream. If you have a room full of mist you are not running it right. To make a very tiny orifice put a tube into your lathe chuck. Make a small female center for the tailstock and spin the tube into the center. You can swedge the tube down to a very tiny hole- a friend did it for a gas jet in a burner for a model engine- an orifice size of just .005- .007. ron ginger -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
There's good reason not to want castor oil mist spraying about too much - those first world war fighter aces were never constipated breathing in all the castor oil fumes coming from their engines - and the brown underpants were not always a result of clashes with the enemy!! ;-} Ian -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
From past experiences with IC radio controlled models, this is a definite drawback to castor oil. Les Ian W. Wright wrote: There's good reason not to want castor oil mist spraying about too much - those first world war fighter aces were never constipated breathing in all the castor oil fumes coming from their engines - and the brown underpants were not always a result of clashes with the enemy!! ;-} -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Monday 16 November 2009, Leslie Newell wrote: From past experiences with IC radio controlled models, this is a definite drawback to castor oil. Les Ian W. Wright wrote: There's good reason not to want castor oil mist spraying about too much - those first world war fighter aces were never constipated breathing in all the castor oil fumes coming from their engines - and the brown underpants were not always a result of clashes with the enemy!! ;-} Since the grocery stores are stocked to overflowing with several sorts of 'vegetable' cooking oils, like olive, corn, soybean, safflower, peanut, even cottonseed or rapeseed, are any of these suitable? Most are cheaper than olive by wide margins. And many are even cheaper than ACE Hdwe's cutting oil, as its about $7/qt. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp philosophy: The ability to bear with calmness the misfortunes of our friends. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Mon, 2009-11-16 at 08:11 -0500, Gene Heskett wrote: On Monday 16 November 2009, Leslie Newell wrote: From past experiences with IC radio controlled models, this is a definite drawback to castor oil. Les Ian W. Wright wrote: There's good reason not to want castor oil mist spraying about too much - those first world war fighter aces were never constipated breathing in all the castor oil fumes coming from their engines - and the brown underpants were not always a result of clashes with the enemy!! ;-} Since the grocery stores are stocked to overflowing with several sorts of 'vegetable' cooking oils, like olive, corn, soybean, safflower, peanut, even cottonseed or rapeseed, are any of these suitable? Most are cheaper than olive by wide margins. And many are even cheaper than ACE Hdwe's cutting oil, as its about $7/qt. Simply pick an oil with a high smoke point and have at it. http://en.wikipedia.org/wiki/Cooking_oil has a good table of smoke points; some are over 500 F. :-) The point about not using castor oil is a good one. I wonder about forming the small hole in the mister by simply squeezing the brass tubing around a small mandrel like in forged rifle barrels. I hope you are not seeing rapeseed being sold for human consumption. By definition rapeseed is high in euric acid ( C22:1) and NOT heart healthy. Canola is the result of seed breeding programs to produce a low euric acid, low glucosinolate rapeseed. Canola is a trademark (Canada and ola (oil). However the Canadians were nice enough to let everyone use the name. Glucosinolates are the hots in mustards but when present in the rapeseed meal have anti-nutritional value in animal feeds. Fouls up the thyroid I think. With a low-low rapeseed everyone gains. You get an excellent cooking oil high in mono-unsaturateds and a high protein byproduct suitable for animal feed. I suspect that the 'stick' machining lubes that were popular a few years ago are simply a soap made from whatever oil happens to be cheap. Dave -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
Misters bother me unless they are tuned just so you can put a big cloud in your shop in no time. Flood coolant might be messy also but it doesn't fog your shop and your lungs. There is some mention of people trying to use food oils on practicalmachinist.com and the residue drying to a sticky mess. http://www.practicalmachinist.com/vb/showthread.php/cold-air-gun-vs-162714p3.html You might want take a sample of the mister oil you want to use and let it sit on a surface for a while and dry and see what you have afterwards. I've done some work in a heat treat facility where they quench hot parts with various fluids and the fumes and mist in that place is really bad. Everything becomes sticky or oily. I'd be careful not to recreate that scene in the space around your machine! I use propylene glycol (aka pink RV antifreeze - you can drink the stuff in small quantities) in my bandsaw as a flood coolant and it works great. It doesn't get sticky, it doesn't freeze, and it has a corrosion inhibitor in it. $2.50/gallon in the fall when everyone puts it on sale. Dave dave wrote: On Mon, 2009-11-16 at 08:11 -0500, Gene Heskett wrote: On Monday 16 November 2009, Leslie Newell wrote: From past experiences with IC radio controlled models, this is a definite drawback to castor oil. Les Ian W. Wright wrote: There's good reason not to want castor oil mist spraying about too much - those first world war fighter aces were never constipated breathing in all the castor oil fumes coming from their engines - and the brown underpants were not always a result of clashes with the enemy!! ;-} Since the grocery stores are stocked to overflowing with several sorts of 'vegetable' cooking oils, like olive, corn, soybean, safflower, peanut, even cottonseed or rapeseed, are any of these suitable? Most are cheaper than olive by wide margins. And many are even cheaper than ACE Hdwe's cutting oil, as its about $7/qt. Simply pick an oil with a high smoke point and have at it. http://en.wikipedia.org/wiki/Cooking_oil has a good table of smoke points; some are over 500 F. :-) The point about not using castor oil is a good one. I wonder about forming the small hole in the mister by simply squeezing the brass tubing around a small mandrel like in forged rifle barrels. I hope you are not seeing rapeseed being sold for human consumption. By definition rapeseed is high in euric acid ( C22:1) and NOT heart healthy. Canola is the result of seed breeding programs to produce a low euric acid, low glucosinolate rapeseed. Canola is a trademark (Canada and ola (oil). However the Canadians were nice enough to let everyone use the name. Glucosinolates are the hots in mustards but when present in the rapeseed meal have anti-nutritional value in animal feeds. Fouls up the thyroid I think. With a low-low rapeseed everyone gains. You get an excellent cooking oil high in mono-unsaturateds and a high protein byproduct suitable for animal feed. I suspect that the 'stick' machining lubes that were popular a few years ago are simply a soap made from whatever oil happens to be cheap. Dave -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
I was looking at misters too once, and it seems the general feeling is it's fine if you're happy to have everything in the workshop coated with oil in a few months. If making a mister, why not just 'mist' oil directly, without the air? Like those 'airless' spray guns. Unless the air blast is a necessary part of the cooling. Just reading another article; - highest smoke point looks to be Avacado oil 520°F/270°C and elswhere; Whale oil was once heavily used in the U.S. for lamp oil and lubricants but not for cooking. The Inuit do use whale oil for cooking as an alternative for Seal Oil http://www.clovegarden.com/ingred/oils.html#seal. Oil from sperm whales (actually a liquid wax) is still the best oil for some precision lubrication applications but is now generally illegal due to the endangered status of whales (the last sperm oil company in the U.S. closed in 1978). Jojoba Oil http://www.clovegarden.com/ingred/oils.html#jojoba is the only satisfactory alternative for whale oil lubricants. Roland 2009/11/16 Dave e...@dc9.tzo.com Misters bother me unless they are tuned just so you can put a big cloud in your shop in no time. Flood coolant might be messy also but it doesn't fog your shop and your lungs. There is some mention of people trying to use food oils on practicalmachinist.com and the residue drying to a sticky mess. http://www.practicalmachinist.com/vb/showthread.php/cold-air-gun-vs-162714p3.html You might want take a sample of the mister oil you want to use and let it sit on a surface for a while and dry and see what you have afterwards. I've done some work in a heat treat facility where they quench hot parts with various fluids and the fumes and mist in that place is really bad. Everything becomes sticky or oily. I'd be careful not to recreate that scene in the space around your machine! I use propylene glycol (aka pink RV antifreeze - you can drink the stuff in small quantities) in my bandsaw as a flood coolant and it works great. It doesn't get sticky, it doesn't freeze, and it has a corrosion inhibitor in it. $2.50/gallon in the fall when everyone puts it on sale. Dave dave wrote: On Mon, 2009-11-16 at 08:11 -0500, Gene Heskett wrote: On Monday 16 November 2009, Leslie Newell wrote: From past experiences with IC radio controlled models, this is a definite drawback to castor oil. Les Ian W. Wright wrote: There's good reason not to want castor oil mist spraying about too much - those first world war fighter aces were never constipated breathing in all the castor oil fumes coming from their engines - and the brown underpants were not always a result of clashes with the enemy!! ;-} Since the grocery stores are stocked to overflowing with several sorts of 'vegetable' cooking oils, like olive, corn, soybean, safflower, peanut, even cottonseed or rapeseed, are any of these suitable? Most are cheaper than olive by wide margins. And many are even cheaper than ACE Hdwe's cutting oil, as its about $7/qt. Simply pick an oil with a high smoke point and have at it. http://en.wikipedia.org/wiki/Cooking_oil has a good table of smoke points; some are over 500 F. :-) The point about not using castor oil is a good one. I wonder about forming the small hole in the mister by simply squeezing the brass tubing around a small mandrel like in forged rifle barrels. I hope you are not seeing rapeseed being sold for human consumption. By definition rapeseed is high in euric acid ( C22:1) and NOT heart healthy. Canola is the result of seed breeding programs to produce a low euric acid, low glucosinolate rapeseed. Canola is a trademark (Canada and ola (oil). However the Canadians were nice enough to let everyone use the name. Glucosinolates are the hots in mustards but when present in the rapeseed meal have anti-nutritional value in animal feeds. Fouls up the thyroid I think. With a low-low rapeseed everyone gains. You get an excellent cooking oil high in mono-unsaturateds and a high protein byproduct suitable for animal feed. I suspect that the 'stick' machining lubes that were popular a few years ago are simply a soap made from whatever oil happens to be cheap. Dave -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial.
Re: [Emc-users] Mister for small mill
Hi Gene, I've been following the thread you started on a mister for a small mill. I can't advise you on making your own, but I can recommend that you just buy one. The systems I have here in my shop are made by Kool Mist. Hands down they are the best. I never buy mine new, but I find them on Ebay. They come up regularly, and I don't think I've ever paid more than $10 for a single head unit. This is the unit I'm talking about. I think it would be perfect for a small mill: http://www.koolmist.com/images/products/560-18-big.jpg I machine a lot of stainless steel, so I use the #77 Kool Mist coolant. I buy it by the gallon from Enco, and you mix it 4 ounces of coolant to one gallon of water. Here is a link to the coolant: http://www.use-enco.com/CGI/INSRIT?PMAKA=505-2076PMPXNO=947353PARTPG=INLMK3 I have no idea why some of you on this list are having trouble with using misters. I typically adjust mine so the air stream is very gentle, and the mist is barely visible. I use my finger in front of the nozzle to make sure coolant is coming out. Tiny droplets will form on the surface of where you are machining that lets me know the coolant is coming out. They are super easy to adjust. Typically I can machine for about 12 hours on one gallon of mix. Also, my machine shop is a very tight air-space wise because I live in a cold climate, and I don't want to pay a lot for heating (when it's below freezing outside, my gas bill is usually only about $34 a month to keep it at 69 degrees inside. I work in 940 square feet). I never get the fogging some of you talk about, and my machines are always dry and clean. This stuff does not spread itself around the shop and make a mess. Before I started using the misters, my tooling costs where much higher. They are not a replacement for true flood systems, but for an open machine (no splash guards), these little units really work great. I do not work for Kool Mist. I just think you should pick one up and use it. You will not be sorry. David, (a machinist who has been cranking handles now for over 35 years) Gene Heskett wrote: Greetings all; I find that I can get brass tubing in pretty small sizes, like 1/16 OD, usually sized to be a slip fit in the next larger size, so this makes it easy to solder up a small nozzle, with the far end built up to 1/4 for attaching the air supply. Now, I'm wondering if there is a standard formula that would tell me the exact geometry it would take to make a 2 tube, one blowing across the end of the other with air, and the second pulling from a nearby quart of cutting oil, in the same manner as the old hand pumped Hudson sprayers, to add a slight mist of cutting oil to the air blowing on the mill? Angles, center separations etc? I think I can just solder the tubing(s) to another small piece of sheet brass to maintain the alignment. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
2009/11/16 Roland Jollivet roland.jolli...@gmail.com: Whale oil was once heavily used in the U.S. for lamp oil and lubricants but not for cooking. The Inuit do use whale oil for cooking as an alternative for Seal Oil http://www.clovegarden.com/ingred/oils.html#seal. Oil from sperm whales (actually a liquid wax) is still the best oil for some precision lubrication applications but is now generally illegal due to the endangered status of whales We were still using whale oil for quenching steel in 1995 when I was doing research at Leeds University. It was old stock, of course, but they had enough to last for many more decades. As for rapeseed oil, I am pretty sure that is what it is sold as in the UK, rather than being rebranded as Canola. What the actual oil is, I have no idea. -- atp -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Monday 16 November 2009, dave wrote: On Mon, 2009-11-16 at 08:11 -0500, Gene Heskett wrote: On Monday 16 November 2009, Leslie Newell wrote: From past experiences with IC radio controlled models, this is a definite drawback to castor oil. Les Ian W. Wright wrote: There's good reason not to want castor oil mist spraying about too much - those first world war fighter aces were never constipated breathing in all the castor oil fumes coming from their engines - and the brown underpants were not always a result of clashes with the enemy!! ;-} Since the grocery stores are stocked to overflowing with several sorts of 'vegetable' cooking oils, like olive, corn, soybean, safflower, peanut, even cottonseed or rapeseed, are any of these suitable? Most are cheaper than olive by wide margins. And many are even cheaper than ACE Hdwe's cutting oil, as its about $7/qt. Simply pick an oil with a high smoke point and have at it. http://en.wikipedia.org/wiki/Cooking_oil Looks like safflower oil has the highest smoke point, I'll get a quart next time I'm at the gittin place. has a good table of smoke points; some are over 500 F. :-) The point about not using castor oil is a good one. I wonder about forming the small hole in the mister by simply squeezing the brass tubing around a small mandrel like in forged rifle barrels. I found, when I arrived at the hobby store today, that I didn't have any of the smallest tubing, which is 0.062 in diameter, and a very small passage. So I now have a brass block made up as described, and the mill was able to drill a 1/16 hole that is very snug on that tubing, so I made the inner nozzle projection adjustable, and it is quite well centered in a 5/64ths inch air hole. I also found an air filter whose bowl will hold about 2 oz of oil. I will feed the main air through it, which will pressurize the bowl to match the air pressure (less than 75 psi because of the 1/8 vinyl hose for everything). I also put a teeny needle valve in the oil hose attached to the automatic valve in the bottom of the bowl so I should be able turn it down quite a bit. With the bowl mounted on the mill head, and slightly below the nozzle, just turning off the air should stop it all. Not tested yet as I need to fabricate the filter bowl mounting yet. I hope you are not seeing rapeseed being sold for human consumption. Until I read this, I though canola was just rapeseed oil specially processed. By definition rapeseed is high in euric acid ( C22:1) and NOT heart healthy. Canola is the result of seed breeding programs to produce a low euric acid, low glucosinolate rapeseed. Canola is a trademark (Canada and ola (oil). However the Canadians were nice enough to let everyone use the name. Glucosinolates are the hots in mustards but when present in the rapeseed meal have anti-nutritional value in animal feeds. Fouls up the thyroid I think. Oh cute, and I damned sure don't mean bow-legged. :( With a low-low rapeseed everyone gains. You get an excellent cooking oil high in mono-unsaturateds and a high protein byproduct suitable for animal feed. I suspect that the 'stick' machining lubes that were popular a few years ago are simply a soap made from whatever oil happens to be cheap. Twouldn't surprise me. I have a stick of Door-eze for car doors, and that still smells like beeswax its 20 years old already. :) Thanks Dave. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp The way some people find fault, you'd think there was some kind of reward. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Monday 16 November 2009, Dave wrote: Misters bother me unless they are tuned just so you can put a big cloud in your shop in no time. Flood coolant might be messy also but it doesn't fog your shop and your lungs. There is some mention of people trying to use food oils on practicalmachinist.com and the residue drying to a sticky mess. http://www.practicalmachinist.com/vb/showthread.php/cold-air-gun-vs-162714p 3.html You might want take a sample of the mister oil you want to use and let it sit on a surface for a while and dry and see what you have afterwards. I'll do that. Olive seems to want to do that as I'm observing our skillets when they are a day old. I've done some work in a heat treat facility where they quench hot parts with various fluids and the fumes and mist in that place is really bad. Everything becomes sticky or oily. I'd be careful not to recreate that scene in the space around your machine! I don't intend to. I intend to rig a $20 vacuum with a throwaway paper bag on the downstream side. I use propylene glycol (aka pink RV antifreeze - you can drink the stuff in small quantities) in my bandsaw as a flood coolant and it works great. It doesn't get sticky, it doesn't freeze, and it has a corrosion inhibitor in it. $2.50/gallon in the fall when everyone puts it on sale. My new bandsaw is relegated to wood, and possibly venison. The old craftsman 12 has cut everything, including slices off the end of a 6 sq alu solid beam. I got it, nearly 2 feet long, several years ago at $1/lb, aka 40 dollars. I'm still making things from it. :) Dave -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp Two cars in every pot and a chicken in every garage. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Mister for small mill
Greetings all; I find that I can get brass tubing in pretty small sizes, like 1/16 OD, usually sized to be a slip fit in the next larger size, so this makes it easy to solder up a small nozzle, with the far end built up to 1/4 for attaching the air supply. Now, I'm wondering if there is a standard formula that would tell me the exact geometry it would take to make a 2 tube, one blowing across the end of the other with air, and the second pulling from a nearby quart of cutting oil, in the same manner as the old hand pumped Hudson sprayers, to add a slight mist of cutting oil to the air blowing on the mill? Angles, center separations etc? I think I can just solder the tubing(s) to another small piece of sheet brass to maintain the alignment. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp Don't remember what you can infer. -- Harry Tennant -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
Here is how I did it. I took a short piece of brass bar and drilled most of the way through with a drill slightly bigger than the smallest tube I could easily obtain. This creates the air jet. I then drilled the rest of the way with a drill the same size as the tube. Next I drilled diagonally in from the back to allow air to pass around the oil pipe to the air jet. The small tube is pushed right through and soldered in place. It projects about 1mm past the end of the jet. The whole lot is then pressed into the plastic nozzle on one of those cheap loc-line hoses. A small plastic pipe runs from the small tube in the jet, down the loc-line and out of a made-up block at the bottom. It sounds more complicated than it is. I found the trick is to make sure the pipe down the middle projects past the end of the air nozzle. This way you get a stream of fine droplets in a cylinder of fast moving air. If the oil pipe is flush with the air outlet you get a fine mist that hangs in the air rather than going on the work. Note that I use a pressurized oil feed as this setup doesn't generate much vacuum. The pressurized oil is supplied with one of those cheap combined air regulator/filter and oiler units on eBay like item #250528218868. I took out the air filter bits and added a pipe fitting on the bottom of the water trap. The water trap now becomes the oil reservoir. The reservoir is only small but it lasts quite a long time as you only need a trace of oil. It pays to use oil designed for misters as it is less toxic than the usual cutting oils. The stuff I use is vegetable oil based and a gallon was damn expensive. However it will last many years. Les I used the smallest tube I could find. Gene Heskett wrote: Greetings all; I find that I can get brass tubing in pretty small sizes, like 1/16 OD, usually sized to be a slip fit in the next larger size, so this makes it easy to solder up a small nozzle, with the far end built up to 1/4 for attaching the air supply. Now, I'm wondering if there is a standard formula that would tell me the exact geometry it would take to make a 2 tube, one blowing across the end of the other with air, and the second pulling from a nearby quart of cutting oil, in the same manner as the old hand pumped Hudson sprayers, to add a slight mist of cutting oil to the air blowing on the mill? Angles, center separations etc? I think I can just solder the tubing(s) to another small piece of sheet brass to maintain the alignment. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
If it's organic, it's bound to be Castor oil, an excellent lubricant. Because it gums up over time, you could just let it go to drain. http://www3.towerhobbies.com/cgi-bin/WTI0001P?I=LXS627P=8 Roland 2009/11/15 Leslie Newell les.new...@fastmail.co.uk Here is how I did it. I took a short piece of brass bar and drilled most of the way through with a drill slightly bigger than the smallest tube I could easily obtain. This creates the air jet. I then drilled the rest of the way with a drill the same size as the tube. Next I drilled diagonally in from the back to allow air to pass around the oil pipe to the air jet. The small tube is pushed right through and soldered in place. It projects about 1mm past the end of the jet. The whole lot is then pressed into the plastic nozzle on one of those cheap loc-line hoses. A small plastic pipe runs from the small tube in the jet, down the loc-line and out of a made-up block at the bottom. It sounds more complicated than it is. I found the trick is to make sure the pipe down the middle projects past the end of the air nozzle. This way you get a stream of fine droplets in a cylinder of fast moving air. If the oil pipe is flush with the air outlet you get a fine mist that hangs in the air rather than going on the work. Note that I use a pressurized oil feed as this setup doesn't generate much vacuum. The pressurized oil is supplied with one of those cheap combined air regulator/filter and oiler units on eBay like item #250528218868. I took out the air filter bits and added a pipe fitting on the bottom of the water trap. The water trap now becomes the oil reservoir. The reservoir is only small but it lasts quite a long time as you only need a trace of oil. It pays to use oil designed for misters as it is less toxic than the usual cutting oils. The stuff I use is vegetable oil based and a gallon was damn expensive. However it will last many years. Les I used the smallest tube I could find. Gene Heskett wrote: Greetings all; I find that I can get brass tubing in pretty small sizes, like 1/16 OD, usually sized to be a slip fit in the next larger size, so this makes it easy to solder up a small nozzle, with the far end built up to 1/4 for attaching the air supply. Now, I'm wondering if there is a standard formula that would tell me the exact geometry it would take to make a 2 tube, one blowing across the end of the other with air, and the second pulling from a nearby quart of cutting oil, in the same manner as the old hand pumped Hudson sprayers, to add a slight mist of cutting oil to the air blowing on the mill? Angles, center separations etc? I think I can just solder the tubing(s) to another small piece of sheet brass to maintain the alignment. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Sunday 15 November 2009, Leslie Newell wrote: Here is how I did it. I took a short piece of brass bar and drilled most of the way through with a drill slightly bigger than the smallest tube I could easily obtain. This creates the air jet. I then drilled the rest of the way with a drill the same size as the tube. Next I drilled diagonally in from the back to allow air to pass around the oil pipe to the air jet. The small tube is pushed right through and soldered in place. It projects about 1mm past the end of the jet. The whole lot is then pressed into the plastic nozzle on one of those cheap loc-line hoses. A small plastic pipe runs from the small tube in the jet, down the loc-line and out of a made-up block at the bottom. It sounds more complicated than it is. I must confess I had to think about this to get the right mental picture, but now its clear, almost exactly the same as an air brush gun, where the liquid comes out of the center. So that center tube feeding in the oil is surrounded by by the air exiting through the gap between the OD of that tube and the drilled holes walls. Neat, and looks to be fairly rugged too. I'll see what I can come up with. The nearest tubing is probably the Hobby Stop 25 miles up the interstate in Bridgeport, he carries that whole line of graduated size tubing in brass, alu and even plastic for the model makers. Neat idea, thanks. I found the trick is to make sure the pipe down the middle projects past the end of the air nozzle. This way you get a stream of fine droplets in a cylinder of fast moving air. If the oil pipe is flush with the air outlet you get a fine mist that hangs in the air rather than going on the work. Good to know that the atomization can be overdone. Note that I use a pressurized oil feed as this setup doesn't generate much vacuum. The pressurized oil is supplied with one of those cheap combined air regulator/filter and oiler units on eBay like item #250528218868. I took out the air filter bits and added a pipe fitting on the bottom of the water trap. The water trap now becomes the oil reservoir. The reservoir is only small but it lasts quite a long time as you only need a trace of oil. That I can source at Lowes, and probably for no more that that one by the time you pay ebays usually outrageous SH. I also have a pair of those in the tank electric fuel pumps, which also might serve as the flow regulator and pump, triggering it with a spare relay on the spindle controller, spindle running, get oil in the air. It pays to use oil designed for misters as it is less toxic than the usual cutting oils. The stuff I use is vegetable oil based and a gallon was damn expensive. However it will last many years. I'll also check that when I am out of the quart of cutting oil I am using now. Thanks Les, appreciate the help. -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp In defeat, unbeatable; in victory, unbearable. -- W. Churchill, on General Montgomery -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
Castor oil is a good guess but not the only one. It's fatty acids are a couple of carbons longer than the average cooking oil and does seem to survive well as a lube in model airplane engines. On the industrial market it is about 30% more expensive than canola. If I wanted to go cheap I'd simply go with canola right off the shelf. Indeed inexpensive enough to not recover. Tea (seed) oil might be another interesting choice. About 88% C18:1 (mono-unsaturated) it has a high smoke point (485 F). Common cooking oil for southern China and available in this country as specialty cooking oil. If you wanted something different blend fat from hamburgers with canola and enjoy the smell of frying beef food while machining. ;-) Probably more than you really wanted to know. Dave On Sun, 2009-11-15 at 20:57 +0200, Roland Jollivet wrote: If it's organic, it's bound to be Castor oil, an excellent lubricant. Because it gums up over time, you could just let it go to drain. http://www3.towerhobbies.com/cgi-bin/WTI0001P?I=LXS627P=8 Roland 2009/11/15 Leslie Newell les.new...@fastmail.co.uk Here is how I did it. I took a short piece of brass bar and drilled most of the way through with a drill slightly bigger than the smallest tube I could easily obtain. This creates the air jet. I then drilled the rest of the way with a drill the same size as the tube. Next I drilled diagonally in from the back to allow air to pass around the oil pipe to the air jet. The small tube is pushed right through and soldered in place. It projects about 1mm past the end of the jet. The whole lot is then pressed into the plastic nozzle on one of those cheap loc-line hoses. A small plastic pipe runs from the small tube in the jet, down the loc-line and out of a made-up block at the bottom. It sounds more complicated than it is. I found the trick is to make sure the pipe down the middle projects past the end of the air nozzle. This way you get a stream of fine droplets in a cylinder of fast moving air. If the oil pipe is flush with the air outlet you get a fine mist that hangs in the air rather than going on the work. Note that I use a pressurized oil feed as this setup doesn't generate much vacuum. The pressurized oil is supplied with one of those cheap combined air regulator/filter and oiler units on eBay like item #250528218868. I took out the air filter bits and added a pipe fitting on the bottom of the water trap. The water trap now becomes the oil reservoir. The reservoir is only small but it lasts quite a long time as you only need a trace of oil. It pays to use oil designed for misters as it is less toxic than the usual cutting oils. The stuff I use is vegetable oil based and a gallon was damn expensive. However it will last many years. Les I used the smallest tube I could find. Gene Heskett wrote: Greetings all; I find that I can get brass tubing in pretty small sizes, like 1/16 OD, usually sized to be a slip fit in the next larger size, so this makes it easy to solder up a small nozzle, with the far end built up to 1/4 for attaching the air supply. Now, I'm wondering if there is a standard formula that would tell me the exact geometry it would take to make a 2 tube, one blowing across the end of the other with air, and the second pulling from a nearby quart of cutting oil, in the same manner as the old hand pumped Hudson sprayers, to add a slight mist of cutting oil to the air blowing on the mill? Angles, center separations etc? I think I can just solder the tubing(s) to another small piece of sheet brass to maintain the alignment. -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment -
Re: [Emc-users] Mister for small mill
On Nov 15, 2009, at 12:45 PM, dave wrote: Castor oil is a good guess but not the only one. It's fatty acids are a couple of carbons longer than the average cooking oil and does seem to survive well as a lube in model airplane engines. On the industrial market it is about 30% more expensive than canola. If I wanted to go cheap I'd simply go with canola right off the shelf. Indeed inexpensive enough to not recover. If you want to get even more value out of your oil - you could burn it when it is done. I have casted hundreds of pounds of iron and aluminum from my oil burner. Or you could heat your shop with it. Here I am melting iron with vegetable oil: http://openosx.com/hotspring/foundry/melt-iron/melt-iron.html Cheers, Jeshua Lacock Founder/Programmer 3DTOPO Incorporated http://3DTOPO.com Phone: 208.462.4171 -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
Hi Gene, almost exactly the same as an air brush gun, where the liquid comes out of the center. So that center tube feeding in the oil is surrounded by by the air exiting through the gap between the OD of that tube and the drilled holes walls. Yup. The tricky bit is finding the right drill diameter. You only need a very small gap otherwise you end up using LOTS of air. With a small gap you can use a higher pressure and most of the flow is then air dragged in by the high velocity air stream. A better way may be to drill the other way round. A big hole followed by a smaller hole that is the jet size. The oil tube is then fitted through a star shaped insert that fits in the larger hole. The air travels through the gaps in the star. Slightly more complicated but it reduces the restriction on airflow so again you can decrease the jet gap and increase efficiency. Mine uses a fair amount of air and the compressor kicking in on a fairly regular basis can get annoying. Oh yes, I forgot to mention you really need a needle valve and one-way valve in the oil line. If you don't have a one-way valve the oil drains back and takes a while to start flowing next time you turn on the air. I used 4mm nylon pipe from the oil reservoir to the mister. You can buy 4mm push fit needle valves and one way valves designed for pneumatics. Neat, and looks to be fairly rugged too. The thin inner tube is a little vulnerable but so far it has survived on my lathe where it often gets wrapped up in swarf. Good to know that the atomization can be overdone. Yes you want to keep atomization to a minimum. pump, triggering it with a spare relay on the spindle controller, spindle running, get oil in the air. I use a solenoid valve on the air supply, driven from the mist coolant output. Les -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Mister for small mill
On Sunday 15 November 2009, Leslie Newell wrote: Hi Gene, almost exactly the same as an air brush gun, where the liquid comes out of the center. So that center tube feeding in the oil is surrounded by by the air exiting through the gap between the OD of that tube and the drilled holes walls. Yup. The tricky bit is finding the right drill diameter. You only need a very small gap otherwise you end up using LOTS of air. With a small gap you can use a higher pressure and most of the flow is then air dragged in by the high velocity air stream. A better way may be to drill the other way round. A big hole followed by a smaller hole that is the jet size. The oil tube is then fitted through a star shaped insert that fits in the larger hole. The air travels through the gaps in the star. Slightly more complicated but it reduces the restriction on airflow so again you can decrease the jet gap and increase efficiency. Mine uses a fair amount of air and the compressor kicking in on a fairly regular basis can get annoying. Oh yes, I forgot to mention you really need a needle valve and one-way valve in the oil line. If you don't have a one-way valve the oil drains back and takes a while to start flowing next time you turn on the air. I used 4mm nylon pipe from the oil reservoir to the mister. You can buy 4mm push fit needle valves and one way valves designed for pneumatics. That latter I haven't found yet. Starting with some tube that was .093 OD, I drilled the next size bigger drill bit about 2/3rds through a small block of brass. This looks usable although I'd druther see a smaller air gap. I haven't drilled the side hole for the air inlet yet, need to go see what size of tubing I can find, in between getting an oil leak looked at on the wifes car. I suddenly need two of me, life keeps getting in the way... Neat, and looks to be fairly rugged too. The thin inner tube is a little vulnerable but so far it has survived on my lathe where it often gets wrapped up in swarf. I figure on milling this down to pretty small, so it can be aimed just by bending the air supply tubing. Good to know that the atomization can be overdone. Yes you want to keep atomization to a minimum. pump, triggering it with a spare relay on the spindle controller, spindle running, get oil in the air. I use a solenoid valve on the air supply, driven from the mist coolant output. I haven't stumbled over one of those yet... Thanks Les -- Cheers, Gene There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) The NRA is offering FREE Associate memberships to anyone who wants them. https://www.nrahq.org/nrabonus/accept-membership.asp Oh don't the days seem lank and long When all goes right and none goes wrong, And isn't your life extremely flat With nothing whatever to grumble at! -- Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
