What is Vacuum Casting?
The process of Vacuum Casting refers to the creation of a geometric object from a silicone mould. It is widely accepted as an alternative to low-volume manufacturing and vacuum, and casting is an easy way of creating a replica of the original component.
How to Make Vacuum Casting
First, the master model, which is the product’s desired form, is situated in a closed environment. Then a semi-liquid moulding material, silicone, is placed around it, forming a thick coat. The curing time changes depending on what type of silicone is used. At this point, the mould should not be touched or moved.
Tips for Vacuum Casting:
- Spray the inside of the cavity with “mould release” before pouring the material in to make the removal easier.
- Using professional casting materials creates high-quality silicone tools
- Make sure to manufacture a new silicone mould before the previous one begins producing low-quality parts (as silicone mould life is around 20 – 30 shots)