Hello to all,
I got a similar problem and don't have a clue also,when a file is loaded to Mach every thing looks good except at the start the Z axis goes up about 3-4 " and comes back about 1" and starts to cut air and is no where close to the top of the material,I have to adjust manually to get it to cut but is not accurate.I check the Zsafe move and looks fine.Any ideas? Thank You for the help,Marco.