The modellers work freehand to create an initial 1:1 plaster model based on the artist's drawing. In technical terminology, this is called a maquette. After this, a model is produced based on the maquette. The model differs from the maquette in that it is approximately 16% larger, so as to compensate for the shrinkage of the porcelain mass as the result of drying and firing. The model is also created freely by hand, which requires the highest degree of craftsmanship. The so-called fitter then constructs a multi-part test mould made of plaster (working mould) around the model. The first specimens made of porcelain are then produced, using this working mould. A mother mould is then made from the fine-tuned model. Plastic fittings are in turn made from the mother mould, which can number more than 80 individual pieces in extreme cases. This makes it possible to copy each mother mould piece as often as one likes.