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The head for this cheery little chipmunk is made from cast plastic wood, which can be purchased by the can or tube. But before the finished head can be cast, a plasticine model must be made and a plaster mould made from it.
Making a Split Plaster Mould Model your plasticine head, then cut it in two halves by drawing a strong thread or thin wire down through it as shown in the illustration, A. This is not as easy as it looks and should be done slowly and carefully. It is easier with someone else holding the head in the palms of his hands with the features up and the neck pointed toward the cutter, as shown, B. The two halves of the head are then placed with their flat sides down in a frame about three inches deep. Mix plaster of Paris into about 2 pints of water, adding the plaster to the water, until it is the consistency of |
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