Just curious MitchB, What program did you use to generate the .nc file. I use BobCad. v 28.

Pat

I think you should try this version :-

ftp://www.machsupport.com/Mach4/DevlopmentVersions/

Thanks for that suggestion.  As a test, I reinstalled 4300 after seeing that 3804 worked.  4300 still didn't work.  Then I tried version 4410 and that works fine.

Just curious MitchB, What program did you use to generate the .nc file. I use BobCad. v 28.

Pat

I used MadCam from Rhino.

Since there is interest in the gcode, I've attached a file which causes the problem.

Looks like the M0 may be causing the issue and why it works in v4410

https://www.machsupport.com/forum/index.php?topic=42292.msg275421#msg275421

In version 4300, removing all the M codes made no difference.