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From: John
Remote Name: 208.187.13.70
Date: 03/08/2004
Time: 04:46:08 PM
Each size had a separate mold. Clay shrinks when it is fired anywhere from about 7% to 25% depending on the exact material. Porcelain shrinks the most. Molds had to be made oversize to accomodate for the shinkage, so the end product of the proper volume.