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Step 5Plaster the alginate
If you didn't cut up any plaster strips before you started, you can do it now - your castee will just have to spend a little more time underneath.
Each helper should have a shallow bowl with a bit of water in it. Take a plaster strip, dunk it in the water, squeeze out any excess, and lay it on the alginate. Cover all the alginate with strips of plaster, until you can't see any alginate blue through it. Three layers is a good amount.
Use smaller strips to cover the nose area. You want to support the alginate as much as possible while still leaving nostril holes for the castee to breathe. Try to push the plaster strips into the crannies of the alginate as much as possible, especially around the nose. You'll have to fill in the nostril holes later and having the plaster close to the alginate is very helpful.
The plaster takes about 15 minutes to set, during which it gets slightly warm and, of course, dries out. You'll be able to tell it's done by feeling its dampness and trying gently to flex it around the edges.
Each helper should have a shallow bowl with a bit of water in it. Take a plaster strip, dunk it in the water, squeeze out any excess, and lay it on the alginate. Cover all the alginate with strips of plaster, until you can't see any alginate blue through it. Three layers is a good amount.
Use smaller strips to cover the nose area. You want to support the alginate as much as possible while still leaving nostril holes for the castee to breathe. Try to push the plaster strips into the crannies of the alginate as much as possible, especially around the nose. You'll have to fill in the nostril holes later and having the plaster close to the alginate is very helpful.
The plaster takes about 15 minutes to set, during which it gets slightly warm and, of course, dries out. You'll be able to tell it's done by feeling its dampness and trying gently to flex it around the edges.
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