For a full torso we need to have 6-8 layers of plaster bandagesĪ four-inch roll of plaster bandage contains 720 square inches of bandage (180 inches long x 4 inches wide).For a half torso, we need about 5 layers.For a head mold we need an average of about 5 layers.For a face mold, 4 layers is sufficient.The bigger the mold the thicker the plaster bandage shell needs to be to keep the mold from distorting during the pouring up. Too few and your mold will distort and possibly collapse into a useless mess. It is really important to have enough plaster bandages. How Many Plaster Bandages Do I Need for a Lifecasting? Always better to err on the slightly thicker side for safety. A full torso can be 400 square inches so we need between 6 and 8 rolls.Calculations show that we need about 3 rolls of plaster bandages A half torso mold is usually about 200 square inches.More on getting plaster bandages to stick. Plaster bandages don't normally stick to alginate so several strategies are used to keep them together. Putting on a hard shell of plaster bandages keeps the alginate in its original shape so you casting comes out better. As such the alginate requires a structural support so it doesn't distort when it is removed from the body. In a layup mold, the alginate is spread fairly thinly onto the surface of the skin, like in a face or torso mold. As discussed elsewhere, there are two types of lifecasts- Bucket Molds and Layup Molds.
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