Hi Dave,
I posted Gcode, even the original CAM program can no longer recognise it. A Gcode viewer should.
Break it into parts so that one tool creates one path. The order of ops is Facing, OD roughing, then the
all important grooving op that produces the semicircular recess, the the parting op. My guess is that Mach3
cannot follow the tool changes and cannot therefore draw a toolpath.
When I get home i will post the grooving toolpath.
Craig