Grinding And Sharpening: In metalworking, sandpaper is usually used for grinding and sharpening many metallic instruments and surfaces. Coarser grits, like 36 or 60, are used to eliminate material and shape the metallic. This is particularly useful for reshaping or sharpening blades, chisels, or other cutting applications. For advanced electronic https://x.com/hongyuxin20/status/1816703996712591364