How to set contour overlap on Haas machine?

Machine is older, it is actually Mikron Haas VCE 500, but the control is very similar/equal to newer Haas mills.

We have problem with this machine that it doesnt finish contour (toolpath) very precise, for example if you make a circle it will leave a small amount of material around start/end point of mill toolpath (circle).

So we deal with this in CAM software, to extend this toolpath for example by 2mm... or make 2 circles instead of one.

But this problem occurs only on this older Haas machine, we have 2 newer and they dont have this problem.

Is there a parameter or setting on the machine which could overlap this contour for some amount so this problem wouldnt occur?

Thanks in advance.

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It would seem to me that setting a proper leadin/leadout in the CAM setup would solve this problem.

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Originally Posted by Jim Dawson

It would seem to me that setting a proper leadin/leadout in the CAM setup would solve this problem.

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Nope, that is not true. Same program on newer machine doesnt have this problem

...try using G61 Exact Stop code or use G09

That is not the solution its a patch. I want to fix machine not change gcode

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Originally Posted by allenp

That is not the solution its a patch. I want to fix machine not change gcode

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I guess the fix might be to call Haas and get a software/hardware upgrade to match the newer machines. Or at least see if they can suggest a parameter change that would fix that.

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