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Vacuum Casting
The vacuum casting process involves making a silicone mold and then pouring liquid material into it to replicate the same product. It can achieve material properties and surface finishes similar to injection molding, and it ensures the highest quality, especially for small-scale production of TPU (rubber-like silicone). It has price competitiveness when making about 10 to 100 products.
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Vacuum Casting

Vacuum casting is a manufacturing process where liquid material is mixed with a hardener and injected into a silicone mold, then solidified in a vacuum environment.

After creating a master model, which serves as the original for vacuum casting products, liquid silicone resin is poured around the master model and solidified.  Once the master model is removed, the silicone mold is completed.
Replicated products are manufactured through vacuum casting by repeatedly pressing the completed silicone molds together, injecting material into the empty space,  hardening the material, and then removing the molds.

Advantages

Can produce small quantities of replicated products in a short time using silicone molds

Can produce integrated products with multiple materials through double injection

Can test injection at low cost

Disadvantages

 Differences in production quality and physical properties compared to the original materials due to the characteristics of the synthetic materials

Need to check design conditions such as undercuts and parting lines

Essential Information for Vacuum Casting

3D Model (STP (STEP), STL)

3D Printing Type

Material

Finish

Materials

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