I am training a fng and we are currently discussing the "proper" way to set a full radius grooving tool. He is a recent grad from a decent machining tech program at a local community college. My way is to set X and comp in the value of the radius. If I am using a 1/4 diameter grooving tool (N151.2-A250-50-5P) I would bring my tool to the OD on my part X axis is X10.0 then I comp it down 0.125" for the radius. And then Z0 comped 0.125 for the radius. he is trying to say that just the touch off point of X10.0 no comp and Z0. no comp. He doesn't get that Mastercam sets the tool off of the centerpoint of the cutter and not off of the touch off point. How do I teach this young person......
Tom.
Tom.