Grinding and Sharpening: In metalworking, sandpaper might be used for grinding and sharpening numerous steel applications and surfaces. Coarser grits, like 36 or 60, are used to eliminate material and shape the steel. This is especially helpful for reshaping or sharpening blades, chisels, or other cutting instruments. For advanced electronic https://www.pinterest.com/pin/1001488035878234493/