Wear an N95 dust mask.
Figure out how much plaster you want to make. Pour water into your pail to about 1/2 the volume of desired plaster.
You will make approximately 2x as much plaster as the amount of water you put in your pail.
Pro Tip: the temperature of the water effects the set up time. Warm water speeds up the reaction, cold water will slow it down.
Quickly sift the plaster into the water.
Continue adding plaster until it starts sinking slowly.
Continue adding plaster until it looks like this. Some plaster is sticking up above the water but it is all saturated. The plaster is evenly dispersed.
First discard any remaining plaster in the trash.
The clean your bucket and hands in the rinse bucket.
Then clean your bucket and hands in the sink. ABSOLUTELY NO PLASTER should go in the sink.