Sandpaper is used to smooth, shape, and prepare surfaces for finishing, and its specific use depends on the grit level. It can remove material to smooth rough surfaces or old finishes on wood and metal, or even prepare a surface for gluing. Different grades of grit, from coarse for heavy removal to extra-fine for polishing, allow for a wide range of applications in woodworking, painting, drywall repair, and even for polishing rocks and gemstones.
