Silicone Casting, a close relative of Room Temperature Vulcanization, or RTV Casting, is the process of pouring silicone into a mold - typically a durable resin - to be cured. Commonly, the mold is created by 3D Printing a high fidelity mold. Upon curing the mold, liquid silicone rubber can be poured into the vacated space. The silicone can then cure in the mold and eventually be removed - a perfect negative of the printed resin mold.
This process is commonly good for quantities from single digits to hundreds of parts. For small quantities, silicone 3D printing may also be a good option.
Liquid Silicone Rubber, Silicone Shore A 30, Silicone Shore A 60
+/-.005" to +/- .02" (.127mm to .500mm) depending on material shrink factor
~80 µin Ra
10-15 Business Days
12" x 12" x 12" (300mm x 300mm x 300mm)
0.04" (1mm) dependent upon material