Silcast II is an unfilled, 100% solid, castable, two-component, polyurethane resin system. It is an odorless, low viscosity and low shrink plastic that exhibits low reactivity temperature (170°F - 77°C maximum), with good durability and impact resistance. This system simulates injection molded plastics (ABS, polypropylene) and works well in many prototyping and casting applications. Once cured, parts are easily paintable and can be machined, sanded, and drilled. Material can either be hand or meter mixed. Fillers can be added to adjust cost, appearance, and function.