Quote Originally Posted by ouchmysac View Post
Mach3 version 3.042.029. This is the CD tormach sent me, its a brand new Series 3 mill, a month old.

I've checked the Z axis motor coupling tight and marked the coupling, motor shaft and ball screw with a sharpie, I don't see slippage.

I'm cutting in air now for these tests, Spindle locked out, coolant switch in off.
That version is several years old, as the latest version is 3.043.066. I believe 3.042 puts it back around 2011 or 2012. The versions I had trouble with were about that age. Just for testing, you might want to download the current version from the ArtSoft website, install it to another directory, then copy the XML file from your Tormach install to that directory, and see if that will run. With the Tormach installation, there may be more (like screenset files and resources) that need to be copied over, since they do so many customizations.

Regards,
ray L.