Tuesday, July 3, 2012

Porcelain vs Clay Molds

Have a doll mold that was made for using with porcelain slip and you want to use it with polymer clay? You can press polymer clay in it but the plaster the mold is made from is softer and will show wear faster than the plaster used for making a mold for pressing clay, and once you press clay in a mold made for porcelain the plaster will absorb oil from the polymer clay. The liquid porcelain slip shrinks slightly as it is fired so a polymer clay doll will be a little larger than a porcelain one from the same mold.

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