Rexite Casting, aluminum sand castings Rexite Casting Company specializes in the finest quality Aluminum Sand Castings, serving a number of Fortune 500 companies. Castings... are carefully produced to exact customer specifications using Hunter automatic molding machines with automatic mold handling equipment capable of producing castings from 1 ounce to 15..., Tenzaloy. Parts can be heat treated. Alloy specifications can be certified if required. Our grinding and finishing department finishes, inspects, and prepares castings for shipment...