I once saw a turning center with live tooling in the rear turrets at the Chicago Tool Show. This thing had(42)programmable functions. I was kind ofyawning until the factory guy drilled and tapped a 6-32 hole on a compound angle. He then started everything that would turn and let it run for a while. He then went back and ran the tap in the tapped hole. No shaving and no broken tap. It was a German machine called a Komet. Bit of an eye opener for an old crank turner.
Mike Swartz