Tried to mill a key slot on O.D. with a radius at start of key slot and the control just ignored the G02 and just milled it with no radius, so we had to program a chamfer by estimating a C start position for the chamfer and it worked well. Is it possible to program a radius using G02/G03 on the O.D.? Is it possible to mill a circle or letter "O" on the O.D.? The programming manual only shows examples of milling on the face not the O.D.