That sounds ok, I was thinking maybe different axes for the left & right, its got 2 different spindles which must move independent to each other as one shaft has a 90mm oil bore and the other end is 45mm deep, as long as I use carbide drills I shouldn't need to centre drill it first, so the MACH4 Industrial sounds like its the correct unit to use, where do I purchase such a unit ? also how would it drive the various motors, would I need to fit ball screw and rotary encoders ?