I literally worked across the parking lot from the cutting tools division and it took me week to get inserts. We used the pvd coated and they was awsome.Ha ! Busted !
Someone once gave me a box of kyocera 'cermets' ? that were incredible. Sharp on the edges, not like ceramics, but cut like ceramics, sparks flying everywhere, hard steel, stainless, never tried aluminum but anything tough ? dry ? hard ? them things were absolutely killer. And the finish ? shiny shiny, shiny boots of leather.
And after the box was gone, I could never find them again. Any idea what they were ?
And someone has to make the machines that make the teeth on the gears ten feet in diameter
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(I'd come up with another screwup story just to keep on-topic but unfortunately that's the only thing I ever screwed up ... unh-hunh)