The quality of the cast polyvacuum parts depends on the quality of the master model. When you need to maintain strict tolerances, glossiness, or even optical clarity, it is best to process through CNC machining.

The casting mold is made from liquid silicone resin, also known as RTV mold. The silicone rubber has excellent chemical stability, self-release properties, and flexibility, and because it has minimal shrinkage, it can effectively transfer fine details from the master model to the mold.

Brightstar's standardized operating procedures ensure accurate replication of parts and consistent mechanical properties. Our vacuum casting technicians control all operational parameters: