I've been away from Mach3 for a few years, so am frantically clearing mental cobwebs...
I have a problem with my first major attempt with Mach3.
3D G-code generated from STL model using the latest version of MeshCAM. Code proofed in CutViewerMill... all good.
Run code on Mach3 R3.043.066 install on CNC router, runs great, then suddenly takes off in a large circle.
The stray tool path occurs at a G2/G3 IJ code line, and behaves like it loses reference for absolute IJ distances. There is a G90 line at the start of code.
Attached pic shows a large circle that occured while running at approx line 1800. The smaller circle happened when restarting the code.
Any suggestions?