Pour the plaster over the slab (or other object). When the plaster has set, turn the whole thing over, peel the clay out of the plaster, and let the plaster continue to dry. When pouring these types of molds, it is best to pour enough so that your objects are covered with a couple inches of plaster, and have at least 2” of plaster around the outside. It is a good idea to mark your box 2" above your master and pour to your marks.

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