While doing some media blasting, we needed a piece to show what can be expected from this service. In this case we were using around #4 soda on this old rim, the picture shows what can be done. Soda blasting is nonabrasive the original finish is what will be left (if the finish is rough cast or milled it will be cleaned back down to this finish). Soda can be used around rubber and glass with out etching it and around u or ball joints without harming them. Opening up a large field in auto restoration and hot-rodding applications as well as any area of metal working.