Quote Originally Posted by Steel View Post
You could calibrate the z axis in mach3, I just cut a part set the tool height to 0 set the cut depth to 19mm but it would only cut 17mm then i figured out it was the z axis calibration in mach3 that needed setting problem fixed !!
I have a chinese 6060 CNC.
It started to give problems with the Z Axis.
I eventually found the solution. The motor for Z is coonected to the shaft with a linc with 4 Allen key grub screws. By chance I found that two of the grub screws had never been fully tightened. As soon as did this everything worked perfectly. I suggest you give it a try. Of course this might not be your problem...Good luck Malcolm