Rapid Prototyping Samples - Urethane Castings

Urethane Castings and Rapid Manufacturing

If your prototype part requires material properties that are different than those offered by the stereolithography process then polyurethane castings could be a perfect fit for your protyping needs. The casting process generally begins with an stereolithography master (however other masters may be used). The prototype master is used to help create an RTV Mold. The cavity created by the master in the RTV mold is then filled with polyurethane. One of the great attributes of castable polyurethane is that it is capable of a multitude of material properties. They are capable of replicating low durometer elastomers, clear and translucent parts, as well as parts that require a heat deflection temperature of up to 300 F (@66 psi). This wide variety of polyurethane resins also allows us to replicate overmolded parts as well.

When multiple prototype parts are required, silicone rubber molds are made from stereolithography models. Shrinkage is added to the stereolithography master to achieve accurate finished prototype parts. Urethane cast parts can be produced in materials and color choices nearly duplicating the production materials. Quantities of 1 up to 200 sets can be produced economically using this technology. Read More>>