Grinding And Sharpening: In metalworking, sandpaper could be used for grinding and sharpening many metal equipment and surfaces. Coarser grits, like 36 or sixty, are used to eliminate material and condition the metal. This is particularly useful for reshaping or sharpening blades, chisels, or other cutting resources. For instance, this https://www.quora.com/profile/Trevor-Flatcher-2/Silicon-carbide-in-new-energy-generation-applications-and-future-trends-Silicon-Carbide-in-New-Energy-Generation-Applic