... material, such as Turning Tools, Milling, Planer Knives, Drill, Boring Tool, such as for cutting Cast Iron, Nonferrous Metals, Plastics, Chemical ... other difficult-to-machine materials. Now a new type of cemented carbide tool cutting speed equal to hundreds of Carbon Steel. ... the powder molding, such as vacuum sintering process, re-use hand-polished diamonds from a single knife, finished a very fine ...