Things You'll Need:
- A Level Table
- 5 gallon bucket for water
- 2 gallon plastic pail for mixing
- Clothes you dont care about
- Dust Mask
-
Step 1
First off, pick your mold, something you want to try to sculpt out of your casting plaster. Estimate how much water it will take to fill your mold, over estimating, is better than underestimating.
-
Step 2
Add the water into the mixing bowl, make sure this goes in first, not the plaster.
-
Step 3
With your dry hand scoop up a handful of plaster and let it fall through your fingers into the water. This prevents large clumps of plaster from falling into the water. keep sifting the dry plaster into the water. Work quickly and spread the plaster all around the surface evenly. Do not mix the plaster or disturb it while doing this or this type of measurement will not work. Eventually you will have little 'islands' of plaster forming above the water surface . When these islands stay at that level and get damp and do not sink, this is the correct amount of plaster.
-
Step 4
Depending on how long you have taken to get the plaster into the water (one minute should do for a small batch), let the mix slake (soak) for 1-3 minutes before mixing.
You can use your hand or you can use an electric drill with a mixer attachment for mixing your plaster. -
Step 5
Batches over 2 Gallons are not practical for mixing with your hands. A mixer blade attached to a 3/8" or 1/2" electric drill will be needed
-
Step 6
When mixing with your hands always wear a long rubber glove made for the materials being used.
Place your hand flat in bottom of bucket, spread fingers, shake your hand back and forth to agitate the plaster in the bottom. Use your hand to move some plaster from other areas to the bottom and continue shaking your hand back and forth.
Plaster creams after a certain point-you must mix beyond this point for the plaster to set properly.
keep mixing for 3 minutes.
