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Paster of paris mix Ratio

Lets say you want to cast plaster of paris (powder form) into your silicone mold. Use a dental stone or something stronger than normal plaster.

The ideal ratio for a Plaster of Paris mixture is 2 parts Plaster of Paris powder to 1 part water. Measure out the water and pour it into your mixing container.

 

Remember that the ratio should be 2 parts powder to 1 part water. If you

 measured out 1 cup of water in Step 1, then you would need 2 cups Plaster of Paris powder.

 

start at sifting the powder over the water. Do not add the powder in

one spot, instead try to cover as much area as you can.

 

remove any air bubbles by tapping before mixing.

Let it stand for 2 minutes before pouring into cast.

If there is plaster in a bowl, let it dry out and then scratch it off and throw into the dustbin- not the sink.

 

 


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