Oberdorfer incorporates four distinct process capabilities that you can depend on. No-Bake, Dry Sand, Semi-Permanent, and Permanent mold aluminum casting processes. We can produce castings from small to large production runs that range from a pound to castings in excess of 4000lbs.       No-Bake Commonly referred to as air-set process which uses chemically bonded sand to produce medium to very large castings. The best part-to-part dimensional accuracy can be delivered on large complex castings. Large to medium size cores are also manufactured using this process. • 48x60x43 – Envelope Size Range • Castings up to 4000 lbs. • Most Efficient Sand Casting Technology • Handle Larger More Complex Castings • Create High Strength Molds     Dry Sand This molding process is used for very intricate aluminum castings; A refractory coating can be applied to the parting line surface to improve the strength and heat-resistant characteristics. • Part to Part Dimensional Accuracy • Simple to Complex Cores • CNC Targeting Process • .090 to .500 Diameter Tube Core Capabilities • Produces smoother metal casting surfaces     Semi-Permanent Mold This mold casting process can range in size from ounces to more than 100 lb. Various complex shapes can be cast out of Aluminum alloys. These metal castings can also be cored. • Patented Rock Shell Process-TM • High Production for Commercial Applications • Very High Precision Quality by use of heated chill • Designed Flexibility For Infinite Core Development • Exceptional Product Strength     Permanent Mold Our permanent molds use various Hall and Stahl hydraulic tilt pour machines. This technique reduces metal tumbling during the pour resulting in superior metal quality. • High Production for Commercial Applications • Permanent molds have finer dendrite arm spacing, grain structure and strength properties • Superior Metal Quality and Metal Finish • Greater Geometrical Possibilities