Z axis problem

[Steel]

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 !!

[Malcolm]

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

[JAZZCNC]

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

This is the most likely cause.!
Another would be that that axis is binding or motors are over tuned. Both these things would cause your problem.

When you say use it at work are you using same this machine or another just like it.?
If it's this machine are you using same computer at work.?