View Full Version : Need Help! Exact stop vs cv mode in Mach 3 from sheetcam

06-29-2012, 10:30 AM
I have a problem with the jerky motion of my router.
I can only find Mach 3post processors in Sheetcam that outputs arcs in I and J commands.
I have previously, using other CAM software, always done arcs with coordinate points instead of I and J,and had no problems.
I have tried to force CV mode on using a G64 line in the beginning of the Gcode file, and the CV mode is showing green on the Mach 3 screen?

Can anyone help?

Regards and thanks

06-29-2012, 11:48 AM
If you mean the CV LED is green, then that means it's on?
I don't really know what else you're asking?

06-30-2012, 04:37 AM

The CV LED is green. Even so the motion seems jerky through the endpoints ofhe arcs.
What I am really after is a post processor which does not write out I and J commands to cut arc segments, but rather breaks an arc up into lots of small straight lines and then cuts it.