How Do You Mix Plaster For Sculpture?
• Estimate the amount of mixed plaster and silica your project requires. Remember it is 1/3 plaster, 1/3 silica flour and 1/3 water. Experience is the best guide here, so as a beginner you will just have to make your best guess, then mix extra to be sure you have enough. Use commonsense. • Premix plaster and silica flour. • Pour clean, lukewarm water into an empty, flexible mixing container. A a standard two-gallon (7.5 liter) plastic bucket is a good container. The amount of water should be approximately one third the total amount of mixed plaster/silica you estimated in Step 1. • Add dry plaster and silica to the water. Gradually pick up handfuls and sift the powder through your fingers. This will break up any clumps, letting the powder fall into the water. Work quickly, but avoid dumping the plaster into the water. Don’t stir or mix the combined water and plaster/silica. • Continue sifting plaster/silica into the water. Watch for it to start sinking slowly. Eventually some of the po
