Re: [Emc-users] Feeds and speeds

2020-02-19 Thread John Dammeyer
on the mill. http://www.autoartisans.com/mill/YAxisMachining-6.jpg John > -Original Message- > From: John Dammeyer [mailto:jo...@autoartisans.com] > Sent: February-19-20 6:30 PM > To: 'Enhanced Machine Controller (EMC)' > Subject: Re: [Emc-users] Feeds and speeds > >

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread John Dammeyer
> From: Jon Elson [mailto:el...@pico-systems.com] > On 02/19/2020 12:02 PM, John Dammeyer wrote: > > > > And soft castings from scrap aluminium like extruded old window frames is > a challenge unto itself. I too use WD-40 for that. Been thinking of just > using a > spray bottle with kerosene.

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread Jon Elson
On 02/19/2020 12:02 PM, John Dammeyer wrote: And soft castings from scrap aluminium like extruded old window frames is a challenge unto itself. I too use WD-40 for that. Been thinking of just using a spray bottle with kerosene. Supposed to be just as good and much cheaper. Ugh, some

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread Marshland Engineering
See here https://www.lubefinder.com/castrol-ilocut-154.html With my syringes, I use maybe 5 cc a day. 5cc x 200 days = 1 litre. A years supply is Pounds $14.50. That is cheaper than water based cutting fluid and I don't have sump to clean out. Cheers Wallace.

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread John Dammeyer
Hi all, Just used threading oil with a brush. It got warm enough with 1/2" HSS, 390 RPM, 5.5ipm that a bit of smoke came off. Something like this could use a chamfering pass around the edges. Ignore the small hole along the opening. Just grabbed a scrap of angle that I had in the junk

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread dave engvall
seed oils are long chain fatty acids linked to a glycerin. Feed stock for varnish and other coatings. Enough double bonds so there is lots of opportunity for cross-linking. With out dryers (catalysts) they just turn gummy.  Organic cobalt compds have been used for years as dryers for the

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread Gene Heskett
On Wednesday 19 February 2020 14:29:42 dave engvall wrote: > Lots of illocut products on web... which one do you recommend? > > Indeed kerosene works well for threading Al and cutting. Probably less > flammable also but being lazy I didn't check the flashpoints. > The highest flashpoint stuff

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread dave engvall
Lots of illocut products on web... which one do you recommend? Indeed kerosene works well for threading Al and cutting. Probably less flammable also but being lazy I didn't check the flashpoints. Dave On 2/19/20 11:05 AM, Marshland Engineering wrote: Ilocut is far superior to WD40. If I

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread Marshland Engineering
Ilocut is far superior to WD40. If I could send samples, I would send some. ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread John Dammeyer
> -Original Message- > From: Jon Elson [mailto:el...@pico-systems.com] > With soft aluminum, the key is to take light cuts and keep > the feedrate up. The problem is that when the metal is > warmed even a little, it gets MUCH softer. So, you want to > keep the cut moving along as fast

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread Jon Elson
On 02/19/2020 10:21 AM, dave engvall wrote: Indeed WD-40 seems to work well for Al. I have some Al that is plain touchy. Creates heat very quickly and then I get adhesion. 6061-T6 seems to be OK. With soft aluminum, the key is to take light cuts and keep the feedrate up. The problem is that

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread dave engvall
Indeed WD-40 seems to work well for Al. I have some Al that is plain touchy. Creates heat very quickly and then I get adhesion. 6061-T6 seems to be OK. Dave On 2/19/20 4:32 AM, Stuart Stevenson wrote: For aluminum I like WD-40. On Wed, Feb 19, 2020 at 3:41 AM Marshland Engineering <

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread Stuart Stevenson
For aluminum I like WD-40. On Wed, Feb 19, 2020 at 3:41 AM Marshland Engineering < marshl...@marshland.co.nz> wrote: > Been machining for a living for 18 years. One off and small runs. Been > there, > flood coolant, mist spray and now unless I'm doing steel or heavy aly, I > have > reverted to

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread Marshland Engineering
Been machining for a living for 18 years. One off and small runs. Been there, flood coolant, mist spray and now unless I'm doing steel or heavy aly, I have reverted to a 5 cc syringe with a thin needle and I spot the material or cutter as it runs with neat cutting oil. If I'm surfacing a plate or

Re: [Emc-users] Feeds and speeds

2020-02-19 Thread John Dammeyer
Which factory? > -Original Message- > From: andrew beck [mailto:andrewbeck0...@gmail.com] > Sent: February-18-20 11:46 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Feeds and speeds > > I found the aliexpress and Amazon endmills are just th

Re: [Emc-users] Feeds and speeds

2020-02-18 Thread andrew beck
February-18-20 9:50 PM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] Feeds and speeds > > > > You guys all probably know this but I'll say it anyway.. You should > start > > using carbide endmills. I run a tooling company here in New Zealan

Re: [Emc-users] Feeds and speeds

2020-02-18 Thread John Dammeyer
> -Original Message- > From: dave engvall [mailto:dengv...@charter.net] > Sent: February-18-20 11:00 PM > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] Feeds and speeds > > Hi all, > > By hot roll I assume you mean something like A36. Alloy

Re: [Emc-users] Feeds and speeds

2020-02-18 Thread dave engvall
running a CNC program. That's the really hard part. John -Original Message- From: Stuart Stevenson [mailto:stus...@gmail.com] Sent: February-18-20 7:04 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Feeds and speeds John, Do you have flood coolant or mist coolant? I

Re: [Emc-users] Feeds and speeds

2020-02-18 Thread John Dammeyer
w beck [mailto:andrewbeck0...@gmail.com] > Sent: February-18-20 9:50 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Feeds and speeds > > You guys all probably know this but I'll say it anyway.. You should start > using carbide endmills. I run a tooling com

Re: [Emc-users] Feeds and speeds

2020-02-18 Thread John Dammeyer
nced Machine Controller (EMC) > Subject: Re: [Emc-users] Feeds and speeds > > John, > > Do you have flood coolant or mist coolant? > > I would be inclined to try the cut full depth if you have flood or mist > coolant. 1/4 inch is on the borderline of having the strength necessary

Re: [Emc-users] Feeds and speeds

2020-02-18 Thread andrew beck
You guys all probably know this but I'll say it anyway.. You should start using carbide endmills. I run a tooling company here in New Zealand selling to the local machine shops. Carbide is awesome. Anyway I have a couple of Chinese suppliers I buy my stuff from and a Taiwanese supplier for

Re: [Emc-users] Feeds and speeds

2020-02-18 Thread Gene Heskett
is more specific > >than "Re: Contents of Emc-users digest..." > > > > > >Today's Topics: > > > > 1. Feeds and speeds (John Dammeyer) > > > > > >------------- > >- > > > >Message: 1 > >Date: Tue, 18 Feb 2

Re: [Emc-users] Feeds and speeds

2020-02-18 Thread Jon Elson
On 02/18/2020 08:45 PM, John Dammeyer wrote: I've got Mecsoft AlibreCAM generating the tool paths for this in the attached photo. It's Cold Rolled steel 3/16" thick. I'm using a 1/4" HSS end mill. I'm trying to figure out, using Machinists tool box, exactly what feeds and speeds could be

[Emc-users] Feeds and speeds

2020-02-18 Thread Marshland Engineering
--- > >Message: 1 >Date: Tue, 18 Feb 2020 18:45:21 -0800 >From: "John Dammeyer" >To: "'Enhanced Machine Controller \(EMC\)'" > >Subject: [Emc-users] Feeds and speeds >Message-ID: <0b0901d5e6ce$

Re: [Emc-users] Feeds and speeds

2020-02-18 Thread Stuart Stevenson
John, Do you have flood coolant or mist coolant? I would be inclined to try the cut full depth if you have flood or mist coolant. 1/4 inch is on the borderline of having the strength necessary to make a full depth cut. I would think 5.5ipm might be a little aggressive but I would leave it

[Emc-users] Feeds and speeds

2020-02-18 Thread John Dammeyer
I've got Mecsoft AlibreCAM generating the tool paths for this in the attached photo. It's Cold Rolled steel 3/16" thick. I'm using a 1/4" HSS end mill. I'm trying to figure out, using Machinists tool box, exactly what feeds and speeds could be used for milling the slot. I was thinking 30

[Emc-users] Feeds and speeds

2014-08-16 Thread Cecil Thomas
Ok, first of all you have permission to laugh but here is my rule of thumb This is meant for a hobby situation not for industrial situations where trimming 10 seconds off an operation means the difference between profit and loss. For speeds when cutting metal on a lathe or mill using high

[Emc-users] Feeds and speeds

2014-08-15 Thread Marius Liebenberg
Being new to cnc lathe setup I have to ask about feeds and speeds. How does one know what feeds and speeds to use on the lathe. On my desktop mill I mostly cut aluminium and I have a small spindle so the speeds are as fast as the thing can handle. Not very scientific. I fitted the lathe with a

Re: [Emc-users] Feeds and speeds

2014-08-15 Thread David Armstrong
see here Marius , http://en.wikipedia.org/wiki/Speeds_and_feeds you dont need to purchase anything , i have just roughly calculated on the pc calc if i had to after a while , you get to remember what works best for you machine , the values can vary a bit by machine so once you find what works

Re: [Emc-users] Feeds and speeds

2014-08-15 Thread andy pugh
On 15 August 2014 08:15, Marius Liebenberg mar...@mastercut.co.za wrote: I fitted the lathe with a VFD and encoder on the spindle so now I can make use of the CSS method but as I said, how to calculate. Lathes are pretty easy, you will basically end up always using the same CSS number for each

Re: [Emc-users] Feeds and speeds

2014-08-15 Thread Marius Liebenberg
Thanks to all, very good information, as always :) On 2014-08-15 09:15, Marius Liebenberg wrote: Being new to cnc lathe setup I have to ask about feeds and speeds. How does one know what feeds and speeds to use on the lathe. On my desktop mill I mostly cut aluminium and I have a small spindle

Re: [Emc-users] Feeds and speeds

2014-08-15 Thread Marius Liebenberg
For interest sake. I found this online calculator site. http://www.custompartnet.com/calculator/turning-speed-and-feed On 2014-08-15 09:15, Marius Liebenberg wrote: Being new to cnc lathe setup I have to ask about feeds and speeds. How does one know what feeds and speeds to use on the lathe. On

Re: [Emc-users] Feeds and speeds

2014-08-15 Thread Gene Heskett
On Friday 15 August 2014 03:15:31 Marius Liebenberg did opine And Gene did reply: Being new to cnc lathe setup I have to ask about feeds and speeds. How does one know what feeds and speeds to use on the lathe. On my desktop mill I mostly cut aluminium and I have a small spindle so the speeds

[Emc-users] Feeds and speeds

2014-08-15 Thread Roland Jollivet
See here too, but not free; http://www.cnccookbook.com/ Roland On 15 August 2014 10:25, Marius Liebenberg mar...@mastercut.co.za wrote: Thanks to all, very good information, as always :) On 2014-08-15 09:15, Marius Liebenberg wrote: Being new to cnc lathe setup I have to ask about feeds