Rapid prototyping resins replicate the performance parameters of production materials from thermoplastic elastomers to polyethylene and polypropylene saving both time and money in new product development. Our product line also includes fire retardant urethane material. Hydrated alumina bulk filler for use with epoxy and polyurethane casting resins. Economical, it provides lower overall cost castings. Generally, the addition of PA0738 lowers the exotherm of the casting and thereby lowers the cured shrinkage. Castings made high a high content of PA0738 are very easy to machine of work with hand tools. PA0703 is a high purity aluminum product with an elongated needle-like configuration. This unique shape is designed to give optimum packing density and particle distribution when mixed with a high temperature epoxy resin to construct a reinforcing backup structure. The ability to provide high filler loading provides excellent heat transfer and compressive strength to the casting.