23 MACHINES FOR POLISHING, WAXING, GLAZING, BUFFING, BRUSHING, CLEANING, SATIN FINISHING, MIRROR FINISHING, DELUSTERING, DERUSTING, WIPING, ABRADING, GRINDING, ROUGHENING AND DEBURRING, ON THE SURFACE OF MATERIAL IN SHEET, PLATE, STRIP, COIL STOCK, CONTOURED AND IRREGULARLY SHAPED FORMS; AND PARTS THEROF