As Dirty Harry says "A man needs to know his limitations" ... A wooden framed tool will change constantly over its life, just the nature of wood. A reasonably priced starting point is 2" square steel tube, or 50mm square tube, for our metric friends. Is it going to be flat enough for your application? That will be up to you as to how you brace it, how you weld it. HINT: low heat, build the two side rail assemblies as a pair, so that any imperfections are the same on both sides. Assume that all parts are not perfect, weld in square nuts in the ends of the legs so you can use leg levelers to make up any fine adjustments. Same thing with the bed support, make sure that bed adjusting is designed in. How do you start from a known starting point? Buy yourself a machinery level on EBAY. I found a used Starret 8" machinery leveling level for $30.00 plus shipping. In a hurry? check out www.shars.com and see what they have to offer. As soon as you have one side leveled, it becomes a process of matching the remaining pieces, remember the adjustability designed in? Here is where you use it. Keep in mind that you are building a single machine, not multiples. For my router, I used 1/2-13 carriage bolts as the adjustable feet, mounted in a plastic deck board spacer. I got the rear rail, (90" long, as close to level as I could with the Starret level), then I used the straightest piece of 4" square tube I could find and placed the Starret level on top of it to match the opposite side. Once in position, I drilled holes in the crossbar flanges to take a roll pin to maintain the alignment. After this, I estimate that the working area was within 0.005", as measured with a dial indicator mounted in the quill of the spindle motor. The working surface on my router is a piece o f 1 1/8" plywood subfloor with a piece of 3/4" MDF over top. I made up the difference of 0.005" by a light surfacing cut of the MDF to make sure it is level. However, everytime it rains here, I know that I have to resurface the MDF, the characteristics of MDF, sorry. My environment here is miserable for any wood based item, never any drier than 50% humidity, sometimes as high as 85% for days. Some things you just have to accept and work with what you have. LinuxCNC has been absolutely reliable for me, been using it for over 10 years now.
----- Original Message ----- From: emc-users-requ...@lists.sourceforge.net To: emc-users@lists.sourceforge.net Sent: Tuesday, April 21, 2015 11:34:27 AM Subject: Emc-users Digest, Vol 108, Issue 58 Send Emc-users mailing list submissions to emc-users@lists.sourceforge.net To subscribe or unsubscribe via the World Wide Web, visit https://lists.sourceforge.net/lists/listinfo/emc-users or, via email, send a message with subject or body 'help' to emc-users-requ...@lists.sourceforge.net You can reach the person managing the list at emc-users-ow...@lists.sourceforge.net When replying, please edit your Subject line so it is more specific than "Re: Contents of Emc-users digest..." Today's Topics: 1. Re: Cnc routers (Mark Wendt) 2. Re: TSC Kawasaki cutoff saw story (Gene Heskett) 3. Re: Cnc routers (Erik Friesen) 4. Re: TSC Kawasaki cutoff saw story (Todd Zuercher) 5. Re: Cnc routers (Bruce Layne) 6. Re: Mesa cards visual documentation (Karlsson & Wang) 7. Re: Cnc routers (Gene Heskett) ---------------------------------------------------------------------- Message: 1 Date: Tue, 21 Apr 2015 05:58:09 -0400 From: Mark Wendt <wendt.m...@gmail.com> Subject: Re: [Emc-users] Cnc routers To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Message-ID: <CABWWDmq9Ot-XbZh5nawcJ3DQWRpYdsUrJVUVNc5MTz=cj0j...@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 On Mon, Apr 20, 2015 at 6:04 PM, Erik Friesen <e...@aercon.net> wrote: > I have been casting around for a new pre built router in the $5 to $10K > range, however it seems a lot of routers come with the whole kit and > caboodle, which means it doesn't use linuxcnc and comes with the computer > and all. I have too much time invested in different custom things to > switch to something else. Does this leave me with building something > myself again? > > I currently have an oak framed router (16x20 work area), gecko drives, mesa > 5i25, etc, but I get tired of tightening it up every month. I'd like to > find something where I could put my existing equipment to use. > > Some I have looked over - > http://www.camaster.com/product/stinger-i/ > > http://www.blurrycustoms.com/#!store/cu2p/!/IMAVX/p/34881281/category=8927047 > http://xzerocnc.com/raptor.htm > Erik, Take a look at http://www.cncrouterparts.com/pro-cnc-machine-kits-c-47_54.html Mark ------------------------------ Message: 2 Date: Tue, 21 Apr 2015 06:19:09 -0400 From: Gene Heskett <ghesk...@wdtv.com> Subject: Re: [Emc-users] TSC Kawasaki cutoff saw story To: emc-users@lists.sourceforge.net Message-ID: <201504210619.09132.ghesk...@wdtv.com> Content-Type: Text/Plain; charset="iso-8859-1" On Tuesday 21 April 2015 04:43:46 andy pugh wrote: > On 21 April 2015 at 03:42, Gene Heskett <ghesk...@wdtv.com> wrote: > > That was a $150 lesson that says if you buy something green from the > > tool shelf, it had better say Hitachi on it. Same for a yellow "Cub > > Cadet" (an I.H. brand) lawn mower that claims a Kawasaki engine. The > > only thing Kawasaki is the label on that turd > > I wonder if it is worth telling the real Kawasaki? They can't be happy > having their good name sullied. > http://en.wikipedia.org/wiki/Kawasaki_Heavy_Industries IDK Andy. It won't make me well. And while Kawi has a rep for building decent bikes in most circles, that KZ750 I owned for 2 years or so, took me anyplace I wanted to go, and came home in a pickup about half the time, with the output sprocket coming loose on the tranny output shaft, tearing up the chain, the sprocket hub and the $90 output shaft in the tranny, this despite my peening the end of the shaft over, locking the retainer nut in place lots better than the bend the ears over washer under that nut ever did. 3 times I had to rebuild it. I finally fixed it with a title to a Suzi GS-1000-G. Push button on right handle bar, go. AND come back every time. With an imitation windjammer making a quiet space for the rider, sit back, relax, have a cigarette, whatever. Top speed with the jammer on it was still in the 130's (Merican mph). It could go farther than my kidneys could in one sitting. Great road bike, gobbled up hiway like it was hungry. For some reason though, it was a deer magnet. Hard on bike and rider at 30 mph. Wore out part of a kneecap, trashed a good hard hat, never did find my glasses & broke a rib when I did the best getoff I'd ever done 26 years ago. I had no intention of having a 675lb bike sliding to a stop on its side with my leg under it. :( But I did miss the deer. :) Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------ Message: 3 Date: Tue, 21 Apr 2015 08:15:10 -0400 From: Erik Friesen <e...@aercon.net> Subject: Re: [Emc-users] Cnc routers To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Message-ID: <caeuupita+oscnu1wkwwbknosjne1ghkfvr6vvk+te64jqu3...@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 www.aercon.net/utilities/photos/SANY0864.JPG www.aercon.net/utilities/photos/SANY0865.JPG www.aercon.net/utilities/photos/SANY0866.JPG www.aercon.net/utilities/photos/SANY0867.JPG Its not that the wood gets loose, its a number of factors, Probably wood compression and moisture movement issue, along with bearing issues. I purchased the rail bearing assemble from cncrouterparts, and while they are fine for a hobby mill, I find that they need to be tightened every 100 hours or so. Also, trash ends up running on the bearing surface. Perhaps my sights are set too high here, but I have looked at this - http://www.ebay.com/itm/261855407885 - as well, but it looks a bit flimsy on the X axis to me. Also, how ever do you get the thing from twisting? I find it hard to understand how you weld up your own frame and get it flat and square, unless you have the right tools to do so. I cut a lot of 12"x12" material into little pieces, so flatness and rigidity is quite important to me. I want to stick a piece of material on the bed and be able to have the part heights come out within 3 thousanths or so, assuming the material has a flat bottom. On Tue, Apr 21, 2015 at 5:58 AM, Mark Wendt <wendt.m...@gmail.com> wrote: > On Mon, Apr 20, 2015 at 6:04 PM, Erik Friesen <e...@aercon.net> wrote: > > > I have been casting around for a new pre built router in the $5 to $10K > > range, however it seems a lot of routers come with the whole kit and > > caboodle, which means it doesn't use linuxcnc and comes with the computer > > and all. I have too much time invested in different custom things to > > switch to something else. Does this leave me with building something > > myself again? > > > > I currently have an oak framed router (16x20 work area), gecko drives, > mesa > > 5i25, etc, but I get tired of tightening it up every month. I'd like to > > find something where I could put my existing equipment to use. > > > > Some I have looked over - > > http://www.camaster.com/product/stinger-i/ > > > > > http://www.blurrycustoms.com/#!store/cu2p/!/IMAVX/p/34881281/category=8927047 > > http://xzerocnc.com/raptor.htm > > > > > Erik, > > Take a look at > http://www.cncrouterparts.com/pro-cnc-machine-kits-c-47_54.html > > Mark > > ------------------------------------------------------------------------------ > > BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT > Develop your own process in accordance with the BPMN 2 standard > Learn Process modeling best practices with Bonita BPM through live > exercises > http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- > event?utm_ > source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------ Message: 4 Date: Tue, 21 Apr 2015 08:29:16 -0400 (EDT) From: "Todd Zuercher" <zuerc...@embarqmail.com> Subject: Re: [Emc-users] TSC Kawasaki cutoff saw story To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Message-ID: <2083076500.80282844.1429619356655.javamail.r...@embarqmail.com> Content-Type: text/plain; charset=utf-8 ----- Original Message ----- From: "Gene Heskett" <ghesk...@wdtv.com> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Monday, April 20, 2015 10:42:03 PM Subject: [Emc-users] TSC Kawasaki cutoff saw story That was a $150 lesson that says if you buy something green from the tool shelf, it had better say Hitachi on it. Same for a yellow "Cub Cadet" (an I.H. brand) lawn mower that claims a Kawasaki engine. The only thing Kawasaki is the label on that turd. That was a $400 lesson as it was a supposedly top of the line self-propelled mower. Cheers, Gene Heskett -- Cub Cadet??? MDT bought up the name when IH went under 30+ odd years ago, and I don't think MDT has ever built anything worth buying. ------------------------------ Message: 5 Date: Tue, 21 Apr 2015 08:45:04 -0400 From: Bruce Layne <linux...@thinkingdevices.com> Subject: Re: [Emc-users] Cnc routers To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Message-ID: <55364650.5080...@thinkingdevices.com> Content-Type: text/plain; charset=utf-8; format=flowed The parts sold as the kit are just the motion control portion. The support structure is part of the flexibility that is up to the end user. A sturdy base that doesn't grow and shrink with humidity is needed, but you don't need to weld and you don't need a 6' X 10' granite surface plate. Most people will build a machine base (perhaps incorporating machine guarding and dust collection enclosure) from 80/20 or Misumi aluminum extrusion. Design it to be rigid and to resist torsional flexing. It doesn't need to be optically flat. Many people will build it using precut pieces (Misumi is particularly good for accurate and repeatable pre-cut lengths) so it should be square when assembled, but your floor won't be level so use machine base feet to level the machine. Null the spindle runout with shims, and then have the router itself machine a spoil board so the top surface is flat relative to the spindle. If you're not using a spoil board, another trick is to put legs with machine base levelers every two feet and use a dial indicator to level the top of the bed to the spindle. It's not quite as tedious as it sounds, and the commercial CNC routers aren't infinitely rigid either so they'll need the same sort of leveling tricks. On 04/21/2015 08:15 AM, Erik Friesen wrote: > Perhaps my sights are set too high here, but I have looked at this - > http://www.ebay.com/itm/261855407885 - as well, but it looks a bit flimsy > on the X axis to me. Also, how ever do you get the thing from twisting? > > I find it hard to understand how you weld up your own frame and get it flat > and square, unless you have the right tools to do so. > > I cut a lot of 12"x12" material into little pieces, so flatness and > rigidity is quite important to me. I want to stick a piece of material on > the bed and be able to have the part heights come out within 3 thousanths > or so, assuming the material has a flat bottom. > ------------------------------ Message: 6 Date: Tue, 21 Apr 2015 18:14:50 +0200 From: Karlsson & Wang <nicklas.karls...@karlssonwang.se> Subject: Re: [Emc-users] Mesa cards visual documentation To: "Enhanced Machine Controller \(EMC\)" <emc-users@lists.sourceforge.net> Message-ID: <20150421181450.2c691d7a8fdbf25cc884f...@karlssonwang.se> Content-Type: text/plain; charset=US-ASCII Hierchical design in Geda is not to bad. In particular it is possible to make several instances of same component which is a sub sheet. Naming of components on PCB is however horrible long. Nicklas Karlsson On Mon, 20 Apr 2015 23:05:03 +0100 andy pugh <bodge...@gmail.com> wrote: > On 20 April 2015 at 22:27, TJoseph Powderly <tjt...@gmail.com> wrote: > > > the idea needs to have 'meta' components so the complexity can be > > reduced ( like pages in hierarchical schematics) > > I do wish that I was free to share the documentation we get for the > PCM software at work. > > Imagine 40,000 pages of Simulink diagrams nested 10 layers deep in places... > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > ------------------------------------------------------------------------------ > > BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT > Develop your own process in accordance with the BPMN 2 standard > Learn Process modeling best practices with Bonita BPM through live exercises > http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ > source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------ Message: 7 Date: Tue, 21 Apr 2015 14:34:11 -0400 From: Gene Heskett <ghesk...@wdtv.com> Subject: Re: [Emc-users] Cnc routers To: emc-users@lists.sourceforge.net Message-ID: <201504211434.11030.ghesk...@wdtv.com> Content-Type: Text/Plain; charset="iso-8859-1" On Tuesday 21 April 2015 08:15:10 Erik Friesen wrote: > www.aercon.net/utilities/photos/SANY0864.JPG > www.aercon.net/utilities/photos/SANY0865.JPG > www.aercon.net/utilities/photos/SANY0866.JPG > www.aercon.net/utilities/photos/SANY0867.JPG > > Its not that the wood gets loose, its a number of factors, Probably > wood compression and moisture movement issue, along with bearing > issues. I purchased the rail bearing assemble from cncrouterparts, > and while they are fine for a hobby mill, I find that they need to be > tightened every 100 hours or so. Also, trash ends up running on the > bearing surface. > > Perhaps my sights are set too high here, but I have looked at this - > http://www.ebay.com/itm/261855407885 - as well, but it looks a bit > flimsy on the X axis to me. Also, how ever do you get the thing from > twisting? Looking at that pix, I see the same flexure as you in that lightweight gantry riser. That is not even remotely close to being stiff enough to carve steel. Even alu would need light cuts, and a fractional pause in the corners for that to catch up IF the tool is sharp. But in alu, the tool is not going to stay sharp long enough to matter if not doing it submerged in an oxygen displacing bath (water based is out), or drowning in a directed mist of oil such as safflower cooking oil (for its higher flashpoint). Either one presents itself as a messy affair. BTDT, several times. Nice job when done but the cleanup? At the end of the job, that 2 oz of safflower oil was a fog in the shop with about a 20 foot estimated visibility range and all over my glasses not to mention the air I was breathing. :( > I find it hard to understand how you weld up your own frame and get it > flat and square, unless you have the right tools to do so. > > I cut a lot of 12"x12" material into little pieces, so flatness and > rigidity is quite important to me. I want to stick a piece of > material on the bed and be able to have the part heights come out > within 3 thousanths or so, assuming the material has a flat bottom. > > On Tue, Apr 21, 2015 at 5:58 AM, Mark Wendt <wendt.m...@gmail.com> wrote: > > On Mon, Apr 20, 2015 at 6:04 PM, Erik Friesen <e...@aercon.net> wrote: > > > I have been casting around for a new pre built router in the $5 to > > > $10K range, however it seems a lot of routers come with the whole > > > kit and caboodle, which means it doesn't use linuxcnc and comes > > > with the computer and all. I have too much time invested in > > > different custom things to switch to something else. Does this > > > leave me with building something myself again? > > > > > > I currently have an oak framed router (16x20 work area), gecko > > > drives, > > > > mesa > > > > > 5i25, etc, but I get tired of tightening it up every month. I'd > > > like to find something where I could put my existing equipment to > > > use. > > > > > > Some I have looked over - > > > http://www.camaster.com/product/stinger-i/ > > > > http://www.blurrycustoms.com/#!store/cu2p/!/IMAVX/p/34881281/categor > >y=8927047 > > > > > http://xzerocnc.com/raptor.htm > > > > Erik, > > > > Take a look at > > http://www.cncrouterparts.com/pro-cnc-machine-kits-c-47_54.html > > > > Mark > > > > -------------------------------------------------------------------- > >---------- BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM > > EDT Develop your own process in accordance with the BPMN 2 standard > > Learn Process modeling best practices with Bonita BPM through live > > exercises > > http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- > > event?utm_ > > source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_ > >SF _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > ---------------------------------------------------------------------- >-------- BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT > Develop your own process in accordance with the BPMN 2 standard > Learn Process modeling best practices with Bonita BPM through live > exercises > http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- > event?utm_ > source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------ ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF ------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users End of Emc-users Digest, Vol 108, Issue 58 ****************************************** ------------------------------------------------------------------------------ BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT Develop your own process in accordance with the BPMN 2 standard Learn Process modeling best practices with Bonita BPM through live exercises http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_ source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
