". Silicon carbide is an ultra-hard ceramic commonly used in industrial cutting blades"
Been a machinist for goin' on 30 yrs, I've never seen a cutting tool made of silicon carbide. Silicon carbide is used as an abrasive, generally for grinding tungsten carbide, which is used for cutters.
34 posted on 12/24/2015 12:27:17 PM PST by misanthrope
(Liberalism; it is not unthinking ignorance, it is malignant evil.)