Why choose Vacuum Casting?
Silicone molding results in high-quality parts comparable to injection-molded components. This makes vacuum casted models especially suitable for fit and function testing, marketing purposes or a series of final parts in limited quantities. Vacuum Casting also lends itself well to a variety of finishing degrees, and we can match the finish you need for your parts.
Ideal applications for Vacuum Casting
Pre-launch product testing
Small series of housings and covers
Concept models and prototypes
Advantages of Vacuum Casting
1 Fast turnaround
Shbury can provide up to 20 parts in 7 days or less, depending on part specification and volume.
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 of color options.
Silicone molds can be used around 20 times before they need replacing.
Vacuum Casting Parts
Step 1:Master building
Masters are 3D solids of your CAD designs. They are usually made by CNC machining or with 3D Printing. Making Master in 40° temperature. After finish and inspect the masters, we will move to silicone mold making.
Step 2: Mold making
Casting molds are made from liquid silicone. Half-Fill the casting box with liquid silicone, Heat the casting box until silicone is fully cured and then allowed to cure in an oven for 16 hours. Fill with extra silicone liquid which is also heated & cured. Once dried, the mold is cut open and the master removed.
Step 3: Make the partsPoured the casting resins into the empty cavity to create a highly accurate copy of the original. It’s even possible to overmold with two or more materials. Silicone molds are typically good for 20 or so copies of the master pattern