I'm missing something when attempting this in Mach 3.
I have all the switches so they home into the front of the machine, to the left, with the spindle going up. I hit "ref all home" and they all hit their switches and then back off a tiny bit.
I have a kamikaze Z axis, and when running a g-code will often start out plunging up, or if it doesn't do that it plunges down several inches a minute or so into a carve. I would like so when it goes up and hits the switch it stops instead of trying to crush the switch.
How do I do this?