Generally, the surface of ordinary stainless steel is scratched, which can be polished back and forth with a belt sander to make a wire drawing shape and improve the surface. If it is brushed stainless steel, as long as the scratch is not too deep, it can be partially covered by regrinding. If it is a mirror stainless steel, it may be more troublesome. Either do not use the scratched part any more, or re polish it, and then use a special polishing tool to repair it.
