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« on: April 30, 2020, 11:59:45 AM »
From a CNC zone post: CV stands for "Constant Velocity", called out by the G64 command. That tries to keep the tool moving at the same speed no matter what's happening in the toolpath. So when it gets to a corner, just like a car that's going fast, it's going to swerve around it instead of one that slows down to make a sharper turn. The less "look-ahead" you have set, or the more speed it's told to run at, the less adjustment it will be able to make. If you want it to follow your toolpath exactly, without cutting any corners, you can set it to "Exact Stop" (G61)
First check to see if you're default (Configure->Mach Motion mode is set to Constant velocity or Exact Stop. If set to constant velocity you might have run the cv and cv tuning wizards. If your code is being generated by a cam post processor check to see whether it is using g61 or g64. If not, turn default Motion Mode to exact stop and run air tests on simpler gcode, rectangles..circles. Next run the same code with cv on. Next run with spindle on to see if noise is being generated and causing the problem.
If none of that works contact PoLabs and NFS.
HTH
RT
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