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Oct. 12, 2002, 07:18AM
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Mold Care
Any molds produced by Hirst Arts can be cleaned up with a small amount of dishwashing detergent or soap and water. If you've had your molds for a long period, and have kept them stacked on top of one another, you may find that your molds stick together. To ensure no damage occurs lightly dust molds you are storing for long periods with baby powder or cornstarch.
This will not hurt your molds or dry out the oils in the rubber. You can also separate them with greaseproof or baking paper, or at a push, even regular copier paper.
Cuts in the mold
You may have molds with cuts in the four corners of the brick depression. Don't worry, these cuts are intentional but if you don't have any, don't worry, they help to reduce the amount of bubbles in the plaster and are cut when the mold is created by Bruce.
If you don't have any, then you don't need any cuts in that particular mold or block, so DO NOT attempt to cut your own or you may ruin the mold.
Temperature
Temperature doesn't really have any effect on molds unless you significantly ignoring the maximum operating temperature for the mold. Anywhere from 1 degree to 150 degrees shouldn't hurt them, as most RTV silicones are able to stand the casting of pewter or similar metals.
Molds that are subjected to very low temperatures may need warming slowly in a warm, room temperature room. Don't attempt to microwave or oven heat frozen molds, or heat them quicker in a bucket of boiling water. Flexing frozen molds is also inadvisable.
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