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Inspirations



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By Don Dougan ————————— By Jim Pollare


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First let's take a look at a completed bronze casting. It took quite a few different procedures to get to this.



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Back to the beginning. On the left is the figure in modeling clay. I then made a mold of it from liquid silicone rubber—that's the blue thing—it is in it's plaster mother mold that holds the rubber in shape.



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Initially I cast her in fiberglass and painted her with acrylic lacquer.



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To now cast her in bronze, first I have to cast her in wax. It's hollow. The wax is about three-sixteenths of an inch thick.



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After the wax is brought to the exact shape and finish I want the bronze casting to have, I encase the wax in an investment material. The first layer is of plaster and silica flour. The fine 200 mest silica allows the fine detail to be captured. It will pick up my fingerprints if I am careless.



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After that is hard she is wrapped in chain. This helps to keep the plaster based investment from cracking when it is heated in the burn out kiln.



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Next she is placed in a sheet metal cylinder and the investment is poured in. This mix consists of one part plaster to two parts brick dust.





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