Mach4 - using the same g-code I used in Mach3 for a pocketing operation in 1/2" aluminum with a 1/8 bit.
Zero the Z axis and the DRO reads 1.622 which is the thickness of the block plus a 1 inch retraction.
All good so far. The operation has a clearance place of .02 inches and a depth of cut of .05" with a final depth of .55". After each completed plunge, the Z moves up to 1.3 inches. There is nothing in the G-Code that tells it to move more than to the clearance plane.
Any ideas appreciated!
Art