... sand cast method: aluminum, brass, bronze, carbon steel, stainless steel, and irons both gray and ductile to name ... can produce 12 molds/hour.Hunter Automatic (Horizontal Flask) sand molding process will produce 120 molds/ ... need to be made of Aluminum, Brass, Bronze, Steel Alloys, Ductile Iron, Grey Iron & Zinc. Typically ... is completed.Process Chart: Precision Stainless Steel Investment Casting Parts