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Max-Cast, Inc.
P.O. Box 662
Kalona, Iowa 52247

tel: 1-8_00-728-933_9
local: (319) 65_6-5365
M-F, 8:30am-5:00pm

Wax Patterns

Waxes cast from rubber molds should be altered as little as possible to avoid losing crisp details. Preferably modifications on these waxes should be carried out at the foundry where tools and skilled assistants are available.

Shrinkage occurs with most materials as liquid turns to solid. Always allow for this shrinkage. The cast wax pattern will be slightly smaller than the original and the metal final casting will shrink still more, as much as a quarter inch per foot. Bismuth is a low melt metal which actually expands as it cools, and is sometimes used to cast patterns slightly oversize to counteract the effects of shrinkage.

We insist that the artist inspect and approve any waxes before we prepare them to be molded for metal casting. Reworking a wax pattern is difficult enough; doing it in metal is very much more time consuming and far more costly.

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