Originally Posted by
ProtoTrains
CutViewer shows the supplied gcode to cut correctly. The toolpath makes a 1.5 turn spiral down, then a half turn at full depth, then a small arc to put the cutter on the Y axis, then a final half turn at full depth to produce a flat bottom.
Also (2 * .2055 radius) + .375 cutter diameter = .786 hole diameter so mathematically it jives.
I know the PCNC software (customized Mach) to accurately render gcode (I am using PCNC3,) so the out-of-round problem must be mechanical.
Best regards,
Randy