Vacuum casting is the most often used further processing method of STL. Up to 20 parts can be manufactured using one mould. Between the 15th and 20th cast, the silicone rubber mould starts embrittling. The amount of casts depends on the PU resin that is used and the shape of the cast.

Regarding shape and material the casts are nearly series quality.

Based on an original mostly produced through rapid technology, or made of any material e.g. wood, metal or plastics, a silicon mould is built. After attaching gate and seperation mark to the original, it gets positioned in a casting box and is recasted with evacuated silicone. After hardening at room temperature or in an oven, the orignial is demoulded. In the resulting mould new parts can be produced. The possible resins are based on PU or epoxide and vary in their characteristics (they can be rubber like to tough and firm). Waxlings for investment casting are possible, too.

Based on the right selection of resins we can offer functional or design models which in optical and mechanical issues are very similar to series parts. The silicone rubber mould is very flexible, that makes it possible to demould even bigger undercuts.