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Messages - mtadamek

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G-Code, CAD, and CAM discussions / Re: mach 3 tool offset issue
« on: April 17, 2017, 08:51:19 PM »
I switched to absolute and it fixed the problem,  the program is now repeatable. I need to read up on g41.  I dont understand the lead in and out.  I undertand g41 being modal.  I really appreciate the help.  Gcode on the surface seems easy, but then you get into the finer points and it gets crazy quick.

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G-Code, CAD, and CAM discussions / mach 3 tool offset issue
« on: April 12, 2017, 04:01:40 PM »
Hi.  I am a new to gcode and cnc.  Trying very hard to learn the basics.  I have a harbor freight mill I converted and I am running mach 3.  I am having a hard time running a very simple program.  The problem is with the tool offset.  The program will run sometimes once and sometimes not at all.  If it runs right, I will try and rewind it and run it again and it just goes crazy.  Cutting anywhere and not following any gcode.  I setup the tool diameter in mach 3 at .250.

What am I doing wrong.  It will run without the g41, but then the offset it wrong.  It has something to do with g41 I am pretty sure.  


Here is my code:
%part 1%
G20 G91 G41
G0 X.50 Y.50 Z0
G1 Z -.05 F10
G1 Y1
G1 X1
G1 Y-1
G1 X-1


Any explanation of this would be greatly appreciated.  

Thank you,

Michael

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