Saturday, March 4, 2017

Technicalities


The materials and techniques associated with making a waste mold have not changed to any extent since the time of Michelangelo. Whereas I divide the mold with brass shims, in earlier times sculptors used clay walls – some still do.

The mold for a portrait bust can be made with just one division between front and back. However, the mold for the full figure is more complicated. If possible, one half of the mold runs the full length of the figure and is called the mother mold. The other half comprises of a number of caps. By releasing the caps one by one the mold can be more easily separated.

The picture below shows all the shims in place. The entire back of the figure, as it rests against the base board, forms the mother mold. Four caps then make up the front of the figure. Cap number two extends across the both thighs.



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