What is vacuum casting?
Vacuum casting is a technology that enables the casting of parts that are complex in shape, have thin walls or negative bevels. Vacuum casting uses a silicone mould, which is created by pouring a silicone mixture over the master model. To ensure that bubbles inside the part are eliminated, the entire process takes place under vacuum. This technology is more time and cost efficient compared to injection moulding or metal mould making.
Suitable use
Vacuum casting can be used to produce full-size end parts in small batches.
Main advantages
- Low cost of part production, no need to produce a metal mould
- It is possible to produce parts with thin walls and negative bevels
- Good surface quality of the part, usually only minimal post-processing is required
- Wide range of materials available
What is the vacuum casting process?
Master model preparation
Using additive technologies or machining, we produce a master model with the desired surface.
Silicone mould production
The master model is then coated with liquid silicone. If the master model contains holes for machining, holes for screws etc. – these places need to be sealed.
The final product casting
After the silicone hardens, the mould is cut in the cutting plane and is ready to produce the final products.
