My son has a plaster of paris mould to build but it does not tell you how much water to add ? i have no idea?
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Answers:
Just slowly add water untill is about the consistancy of pancake batter, maybe a little looser.
IT IS USUALLY THE SAME PART OF MIX TO SAME PART OF WATER.SO LIKE 1/2 CUP MIX TO 1/2 CUP WATER
I use a lot of Plaster of Paris in my crafts and use the 2 to 1 ratio. 2 Parts powder, 1 part water. That ratio seems to give me the best consistency and working time.
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