Abstract: A turntable for selectively accommodating different types of workpieces in which the system is designed for combining two turntables into one for handling two different workpieces which are rotated by two different motors. Preferably, one of the motors is connected to one of the tables for rotating the table continuously at a slow speed for treating large parts. The turntable is adapted to be selectively arranged for a second motor to drive a second table at incremental positions so as to index smaller parts for treatment. One drive shaft of the two motors is located within the other drive shaft which is hollow.

Abstract: A method for treating an article having rust corrosion characteristics in which the article is dry-blasted by the propulsion of glass beads to compressibly peen the surfaces of the articles and thereafter preferably applying a protective coating to the peened surface. The glass beads are preferably blasted against such surfaces by pneumatic propulsion and are of a mesh size falling within the range of 70-140 mesh. Also, preferably the intensity of the glass beads striking the surface of the article is controlled so than an Almen test strip "N" subjected to the same blasting procedure shall show an Almen gauge reading of 0.005-0.007 inches. This invention encompasses an article treated specifically for the purpose of corrosion protection employing the above method.