The sanding process is a surface finishing operation used to smooth, clean, or refine the texture of a material by rubbing it with an abrasive material, usually sandpaper or an abrasive belt. It is one of the most important finishing steps in metalworking, woodworking, and especially in beauty instrument manufacturing, where a smooth, polished, and flawless surface is essential.
In sanding, abrasive grains on the sandpaper or belt act as tiny cutting edges that remove small amounts of material from the surface. This controlled abrasion eliminates scratches, burrs, and irregularities, preparing the product for polishing, coating, or final assembly.
Sanding not only improves the appearance but also enhances grip, smoothness, and hygiene — crucial qualities for beauty instruments like scissors, nail nippers, tweezers, and manicure tools.