The prototype is fundamental for the creation of the rubber mould which will grant the multiple replications of the desired object. In order to create the mold, we use materials that enable highly accurate replication: a special silicone rubber which will be carefully chosen to obtain accurate patterns. To this model a small metal stick is accordingly added, stick which will become a feeding channel in the next processing stages. All this is packed in the center of rubber sheets and squeezed in the claps of the vulcanizer, a machine equipped with warm sheets capable to melt the rubber so that it completely 'incorporates' the prototype. Once it is cooled, the matrix is opened and the model is taken out. This delicate operation is performed with scalpels. The matrix is cut in zig zag in order to facilitate the perfect closing of the two rubber parts when the wax is injected to obtain the model.

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