I'm trying to get my router to make .140 dia. holes with a .125 dia. bit. Drawing is a .dxf imported into BobCad w/ Gcode generated after cleanup, tool dia is set in BobCad and G41 is automatically inserted. the holes are drawn as .07 rad. arcs. I had problems with Mach3 making a few holes (out of about 18) correctly, but for the rest the machine makes a " J " or " S " shaped move or a larger dia. hole as if G41 is ignored (all arcs are CCW in direction on the drawing). The code looks the same for each hole (only location numbers for x and y change). I took the code and ran it through a gcode to dxf converter and it came out as a clean drawing, identical to the original. I've tried many times re-generating the code in BobCad. each time a different hole (or holes) comes out correctly. I havn't cut material yet, just a flyover to check the program. I don't have much hair left. The router works great using PhotVCarve. One time I forgot to add a line for tool number so it made the tool path without an offset, the holes were all round but of course would have been too large. when I added M6 T4 it went back to the S or J motions for most of the holes.
There are 3 rectangles w/ large rad. corners that come out right w/ proper offset. BTW, I'm trying to make a guitar pickguard.
Why the J or S moves?