Hi,

Can anybody give some good target numbers for backlash? This is for a Warco WM-14 mill converted a while ago (not by me). The numbers right now are X/Y/Z ~40/80/80 microns. I want to improve the 'lash as I'm seeing some milling artifacts sometimes on curves. Sometimes the newbie doesn't know whether it's the machine or themselves :). X&Y are direct stepper driver, Z is belt and pulleys. To measure the 'lash, I'm moving back and forth +-5mm and using a 1 micron resolution indicator.

TIA, Alan