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Author Topic: Cutter Compensation  (Read 34880 times)

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Offline Sage

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Re: Cutter Compensation
« Reply #60 on: November 29, 2010, 08:11:05 PM »
Sorry to post on such an old topic but I'm wondering if this cutter compensation issue ever got fixed (in a lock down verison).
I seem to remember some posts saying icutter compensation was close to being fixed or was fixed. It sure would be nice to use it to make small changes for worn or undersized cutters.

Does anyone remember if cutter compensation got fixed (and released).

Sage

Offline ger21

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Re: Cutter Compensation
« Reply #61 on: November 29, 2010, 09:35:32 PM »
Nope. But just like I said 2 years ago, I use it all the time, and it works fine for me. :)

The comp was redone and released in a test version, but that version had other bugs and was pulled. Don't expect to see the updated comp until the next version of MAch3 is released.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html

Offline ger21

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Re: Cutter Compensation
« Reply #62 on: November 29, 2010, 09:38:40 PM »
Reading back a few posts, I don't think the new version is going to work the way you want either. There's a thread here somewhere started by Brian that layed out rules that must be followed for the new comp to work correctly.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html

Offline Sage

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Re: Cutter Compensation
« Reply #63 on: November 29, 2010, 09:43:22 PM »
Yeah - Somewhere  :-\

I guess I could search on "Barker" he doesn't chime it too often.


Sage

Offline BR549

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Re: Cutter Compensation
« Reply #64 on: November 29, 2010, 10:04:31 PM »
The new comp code is very much Fanuc in nature and worked very well when I tested it a while back.
(;-) TP

Offline BR549

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Re: Cutter Compensation
« Reply #65 on: November 29, 2010, 10:09:28 PM »

Offline btu44

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Re: Cutter Compensation
« Reply #66 on: November 30, 2010, 01:17:56 PM »
Hope you guys don't mind a lurker chiming in but I would like to describe my experiences with Mach3's cutter comp.
I've been using Mach3 on a Tormach mill for about 4 years now. Back then I tried cutter comp and things went terribly.
So after reading this thread I decided to revisit cutter comp.
The original problem I was having turned out to be, that I was putting the cutter comp entry in the 'Diam. wear' innstead of 'Diameter' was the issue.

So this time I followed the cutter comp instructions carefully. I was using a .75" linear lead in for a .5" cutter after invoking the G41 code.
I was only using -.001" to -.005" cutter comp during testing. Things were working great for about 20 different test cycles.
But then all of a sudden the the cutter rapid'd in to the part. All I had changed was the cutter comp entry.
I continued testing with the cutter above the part and no cutter comp entry changes. The rapid problem still excised.
Next I rebooted the computer, restarted Mach3, and reran the same test code. The problem went away for awhile and then came back for no reason I can determine.
If I edit the code to 'remark' the G41 and the G40 entry, the problem went away. Unremarking the G41 & G40 and the problem returned. Only a Mach3 restart fixed the problem for a time.

So IMHO the cutter comp is still a no go. To bad thou...i really miss it.
Barry


Offline Sage

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Re: Cutter Compensation
« Reply #67 on: November 30, 2010, 02:47:22 PM »
Thanks for finding the link to the discussion on the fix. So it does appear that it is fixed if you use the development version 3.043
Since this has been out for a couple of years now, I assume it hasn't had any other show stopping problems  ;)
It's probably the best we're going to see for now until the re-write becomes gospel.

Maybe I'll give it a try.

Thanks guys

Sage

Offline BR549

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Re: Cutter Compensation
« Reply #68 on: November 30, 2010, 02:58:11 PM »
I don't know for shure IF the code made it into a version or not. I know it was in a devel version for testing purposes. One way to test is IF it excepts arcs for leadins then it is NOT the new code.

(;-) TP

Offline ger21

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Re: Cutter Compensation
« Reply #69 on: November 30, 2010, 04:41:29 PM »
Afaik it's only in 3.43.000, which apparently has other issues, so is no longer available.

And Barry, are you running Tormach's version of Mach3? if so, what version is it.

Maybe my use of comp is a lot more basic than others, but it works 100% of the time for me.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html