CS-HD SILICON CARBIDE POLISHING STONE
Compared to the CS or CS-M, the CS-HD is harder acting and slower to break down. This polishing stone can be used to polish even the hardest die and mold steels. Polishers claim excellent results with the CS-HD when finishing dies ranging in hardness from 47 to 63Rc. Some mold makers also use CS-HD for removal of EDM.