Hello, I have a plasma cutter and I would like to have the Z axis reference to a switch, which I now have and works, but I would like Z to retract to a position rather than just back off the switch. I have a floating head, and the people that are going to operate the machine I know will forget to raise the head before making moves. What is the best way to home Z, and then have it back up a certain amount after backing off the switch?
Thanks