Newbie here. Anyone have any experience broaching an internal square drive (1/2") in the end of a 17-4 PH stainless steel threaded shaft? The 2" shaft currently has a 1.5" hex drive on the end of it, but due to interference with another part needs to be cut off and an internal drive put in it. It's also hardened to Rc 38-45, so that may complicate matters. Any advice? Can it be done?
Jim
Jim