Grinding and Sharpening: In metalworking, sandpaper may be used for grinding and sharpening a variety of metallic tools and surfaces. Coarser grits, like 36 or 60, are used to eliminate material and condition the metallic. This is very beneficial for reshaping or sharpening blades, chisels, or other cutting applications. When https://x.com/hongyuxin20/status/1816465929800151381