The foundry Reinhard Tweer GmbH has its own pattern shop. There is the possibility to build the pattern
in wood, resin or polystyrene. The pattern choice depends on the use; e.g. serial patterns are made of resin,
single castings can be made of polystyrene.
The attention is put on special characteristics as e.g. shrinking allowance. The property of the shrinking
allowance during the solidification process needs an allowance already during the patternmaking.