Grinding And Sharpening: In metalworking, sandpaper is usually used for grinding and sharpening a variety of steel applications and surfaces. Coarser grits, like 36 or 60, are used to get rid of material and condition the steel. This is particularly useful for reshaping or sharpening blades, chisels, or other cutting https://www.quora.com/profile/Trevor-Flatcher-2/Silicon-Carbide-in-wind-power-equipment-applications-Silicon-Carbide-in-Wind-Power-Equipment-Applications-Silicon-Carb