Cast Urethane Molding
Similar to injection molding, urethane casting produces hard plastic parts using a two-part mold. When the two halves of the mold are combined, a void is created that the urethane is poured into until it cures. Unlike injection molding however, urethane casting uses soft mold materials, such as silicon rubber, and is more suited to small runs or one-off parts. The mold must still be manufactured by CNC Machining, Additive Manufacturing, or another process. When the mold can be made easily or exists already and the run is small, Urethane casting is ideal.
Low cost for small runs
Consistent mechanical properties
Wide variety of materials
Good solution for 25 parts or less