Casting jewelry

 

 

A metallic piece of jewelry will either be a unique piece, for example a unique custom made engagement ring or the model to be used for a rubber mold. It may be produced by lost-wax casting. This traditional method was already used by the ancient Egyptians.

 

The shape of the piece to be produced is initially shaped in wax or made of metal at a scale of 1.05 (or an average of 3%) to take into account solidification shrinkage (slight reduction of the dimension of the metal piece produced compared with the wax model. This is linked to the physical phenomenon of metals that are less dense as a liquid than as a solid, which results in a volume decrease as the metal cools and solidifies.