In the release of Mach3 that I have, the mill portion has a handy motor tuning thing for getting the steps set correctly. I tell the motor how much to (1") and then measure the distance and input the actual distance it moved and Mach3 makes the necessary adjustments automatically. Pretty cool feature.

I cannot find a comparable feature in the lathe portion. Is there one?

I tried running the motor tuning program in the mill part and then took the numbers and input it into the lathe config file and I am off .003 on a 1" move. On the mill, it comes out exact. The number is something like 10123.4543563 (that is a total guestimate as I dont have the lathe computer running right now.)

I suppose I can change the numbers after the decimal until I get it right on, but that might take awhile.

Thanks
Mike