I have had an issue with the z axis since I set my new machine up 3 weeks ago. It will go up and down but sometimes will skip a revolution and then just go down 2 revolutions’ all at one time. It seems to do this mostly going down. It happens pretty much every time I set the machine up to start a cut. I did what another user suggested and measure the distance up and down and told it to move one inch. It went up fine from 10 inches to 11 inches …but when I told it to go down from 11 to 10 it only went to 10.3 and stopped. I then did another down command and it went all the way to 9. I had a project that I was working on and it cut the first square fine but then the z axis did not go high enough to move over to the right and start the next cut. It dragged on the wood a little bit …it was probably about 1 mm to low.
I have gone through and tighten all the belts and wheels and made sure there were no loose wires and my material is clamped down very well.
I put another test piece in right now and it’s not dragging the bit anymore. I am not sure if this was just a one off glitch or if I need to do something further.
Any insight would be helpful.