Grinding and Sharpening: In metalworking, sandpaper may be used for grinding and sharpening various steel resources and surfaces. Coarser grits, like 36 or sixty, are used to remove material and form the metallic. This is particularly useful for reshaping or sharpening blades, chisels, or other cutting instruments. HowtoFindRocks.com is often https://www.pinterest.com/pin/1001488035878384911/