The original model is encased in plaster-like investment, which is specially created for jewelry making. After the investment sets, the encased wax model is burned away in an oven, leaving a jewelry shaped void in the hardened investment. That space is filled with silver, forming a slightly smaller duplicate of the original wax design, which is polished to perfection. The silver master model is then packed into a fat sandwich of special mold rubber and squeezed tight under high heat and pressure until it forms a solid block. The rubber forms itself around the master model, creating a perfect three-dimensional impression of the piece of jewelry. The rubber is cut in half to remove the silver master. Then the rubber is put back together and hot wax is injected through a hole in the rubber to fill the ring-shaped space inside, forming a wax reproduction of the master model (but a bit smaller.)

So all these steps have taken us back where we started: with a wax model of the ring, which is checked again to make sure it is perfect, and any seam mark removed. However, now that there is a rubber mold, any number of these waxes can be created. When it starts to lose detail, a new rubber mold will be created from the master model.

To finally turn wax into gold, a number of wax models, usually 10 or 20 are placed on a large branching wax tree. Positioning each piece on the tree must be done carefully, thicker pieces will go on the bottom, thinner on the top and the joint where the piece is joined to each branch must be positioned in a thick place in the design, where there is no detail, like the back of a ring. When the tree is complete, the whole wax structure is placed in a flask.