Vacuum casting is a manufacturing process that provides low volume parts with production level quality.
Vacuum casting is used to make functional prototypes for marketing and consumer trials or production parts for lower volume.
Vacuum casting begins by making a master sample out of SLA which is then used to create a silicone mould by casting silicon around the master. Once the mould is set, it is cut along a predetermined plane and the master is removed. The mould is used to create a new product made from polyurethane which mimics nearly 80% to 85% of the mechanical properties of thermoplastic material, creating a nearly identical prototype that is trial ready.
Material Used in vacuum casting:
Acrylonitrile butadiene styrene is popular due to its low production cost.
Polypropylene is one of the most widely used plastics and is very easy to mould.
Glass Filled Material
Glass filled polymers increase structural strength, impact strength, and rigidity.
Polycarbonate offers high impact resistance and is available in transparent variations.
Wax can be formed into nearly any form imaginable and offers the ability to create surface textures. Wax is available in the form of wire, sheets, and sprues.
Rubber like materials are tough and have good tear strength. They’re ideal for gaskets and seals.