Vacuum Casting Service

We offer a complete turnkey solution for creating master patterns and cast copies based on your CAD designs. We not only make high-quality molds but we also offer a full line of finishing services including painting, sanding, pad printing and more. We’ll help you create parts for showroom quality display models, engineering test samples, crowdfunding campaigns and more.

What Is Vacuum Casting?

Polyurethane vacuum casting is a method for making high quality prototypes or low volumes of parts formed from inexpensive silicone molds. Copies made in this way show great surface detail and fidelity to the original pattern.

Advantages Of Vacuum Casting

  • Low cost for molds
  • Molds can be made in a few days
  • Many types of polyurethane resins are available for casting, including overmolding
  • Cast copies are highly accurate with excellent surface texture
  • Molds are durable for 20 or more copies
  • Perfect for engineering models, samples, rapid prototypes, bridge to production
 

Vacuum Casting Video | Star RapidVacuum Casting Tolerances

The finished dimensions of vacuum cast parts are dependent on the accuracy of the master pattern, the part’s geometry and the type of casting material used. Generally a shrinkage rate of 0.15% is to be expected.

Vacuum Casting Materials

Hundreds of casting polymers are commercially available to reproduce any conceivable hardness and surface texture. It is also possible to make parts that are fully opaque, translucent or completely transparent depending on your application. 


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