Sun-Tech is fully capable of handling your vacuum casting and silicone molding needs. With years of expertise in the field, we can fabricate your parts to the highest standard and with fast turnarounds.
Vacuum casting is a great way to make rigid or flexible parts, and is ideal for prototypes, engineering testing, concept proofing and display demos. These parts can be made from hundreds of casting polymers.
Vacuum casting is a manufacturing technology that uses a vacuum to draw liquid material into a mold. It differs significantly from injection molding, which pushes liquid material into a mold using a screw.
The process of vacuum casting offers significant advantages, and is particularly useful for parts that have undercuts or fine details.
The process starts with a master model, which 3ERP creates using one of its CNC machining centers — though 3D printing can also be used. This master model is then immersed in liquid silicone, which is cured and becomes the mold.
Advantages of Vacuum Casting
1 Fast turnaround
Sun-Tech can provide up to 20 parts in 15 days or less, depending on part specification and volume.
2 Affordability
Silicone molds are less expensive than the tooling used for injection molding, resulting in low prices.
3 Capable of producing large parts
Depending on the type of equipment used, vacuum casting can to create very large parts.
4 Superior surface finish to injection molding
The vacuum process removes air bubbles and allows the material to capture fine details.
5 Color options
Coloring pigments can be added to the resin for a variety
