How much is a bag of plaster of Paris and how much does it cost?

Question: OK I probably spelled it completely wrong but either way I need to make about 20 simple ornimates for my girl scout troop. Does anyone have any idea how much I would need and how much it is?

Answer: you didn't mention how big these things your are going to make are. Could like a five lb bag will be enough its 2 or 3 dollars. When you mix your plaster put water in the container first the very slowly sprinkle in the plaster while gently stirring it until it get about the consistency of thin sour cream then put it into your molds if you molds are not rubber and flexible make sure that you brush them light with dish soap as a separator as the plaster will stick to the mold other wise wait until the molds have heated up in their drying reaction then gotten cool before you take them out good luck girl scouts rule

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