Grinding and Sharpening: In metalworking, sandpaper might be used for grinding and sharpening various steel equipment and surfaces. Coarser grits, like 36 or sixty, are used to get rid of material and condition the metallic. This is especially valuable for reshaping or sharpening blades, chisels, or other cutting applications. For https://x.com/hongyuxin20/status/1818535565337272483