Metal Castings, Metal Polishing, Metal Buffing, Finishing Services, Stainless Steel Polishing, Vapor Degreasing, Williams Metalfinishing, Sinking Spring, Pennsylvania; Polishing Services; Finishing Services; Cleaning Services; Grinding Services; and FFL license certified. Finishing services for aircraft & aerospace industries. Capabilities include buffing, polishing, vapor degreasing and shining. Suitable for tube, flat bar, sheet, plate, forgings, extrusions, die and sand castings, stampings and machined and ...