Grinding And Sharpening: In metalworking, sandpaper can be used for grinding and sharpening many steel resources and surfaces. Coarser grits, like 36 or 60, are used to get rid of material and shape the metal. This is especially practical for reshaping or sharpening blades, chisels, or other cutting instruments. I've https://www.pinterest.com/pin/1001488035878234496/