Aluminum cutters in carbide of a machining operation require more clearance on the primary cutting edge plus more secondary clearance, than that of steel, they also have a less honed primary cutting edge. If you use a steel insert on an aluminum part it will create friction (heat) that will destroy the insert prematurely. If you use an aluminum cutter on steel it will desinigrate because it has no strength upon the cutting edge. Therefore, they operate upon two different planes. I know, it sucks, sorry.. |