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Casting plaster in silicone mold12/3/2023 ![]() I wanted to make a donut trophy of sorts to give to friends. NOTE: You can make the sprue and air hole out of clay if you would prefer, they just won't be quite as uniform. I will explain what these are and why they are necessary as we make the mold. These will act as your sprue and air hole. Two very small additional things you'll need are short dowels:two pieces 5/8" long, one 1/2" in diameter and the other 3/16" diameter. *(x2) 2.8 lbs kits for this particular mold. Mold release - I use Mann Ease Release 200.Stir sticks (paint style and tongue depressors).Casting material (I used casting plaster).Mold making material (I used Smooth-On Oomoo 25 Silicone Rubber*). ![]()
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