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The technology:


The method uses cast silicone molds made as follows: a master model (typically by selective laser sintering) is carefully prepared to ensure a high quality finish to the surface and the definition of the parting planes. Silicone is cast around the master, partially under vacuum in order to avoid air bubbles being trapped in between the master and silicone. After curing, the mold is cut according to the parting planes and the master is removed, leaving a cavity to make copies.


  • Production of small series (10 to 20) of functional plastic prototypes
  • Parts are suitable for fit and function testing
  • Prototypes for mechanical, thermal or aesthetic validation
  • Marketing purposes

Some good reasons to choose Vacuum Casting:

  • Cost-effective for low volumes
  • Functional plastic parts
  • Broad range of materials (rigid & rubber parts)
  • Multi-material parts via overmoulding