Grinding And Sharpening: In metalworking, sandpaper is often used for grinding and sharpening several metallic equipment and surfaces. Coarser grits, like 36 or sixty, are used to eliminate material and shape the metallic. This is very helpful for reshaping or sharpening blades, chisels, or other cutting instruments. Sandpaper is a https://x.com/hongyuxin20/status/1818170912933564627