After having had a discussion in another thread on the merits (and failings) of coated carbide cutters versus HSS, I really can't understand why the metal used for the cutter underneath the coating is still tungsten carbide, (or is it?).
It appears to me that if the coating gets chipped, the metal underneath plays a very insignificant part in the cutting process thereafter, so why isn't it just steel? - how is tungsten carbide relevant here? |