Grinding And Sharpening: In metalworking, sandpaper may be used for grinding and sharpening many metal equipment and surfaces. Coarser grits, like 36 or 60, are used to get rid of material and condition the steel. This is very beneficial for reshaping or sharpening blades, chisels, or other cutting applications. The https://www.pinterest.com/pin/1001488035878233664/