Plaster embedded gauze might remind you of what the nurse wrapped around your broken wrist in the emergency room. Yes, plaster dries hard and can hold broken bones in place for mending. It also can be layered into sculptural forms or can provide a rigid mother mold for a more delicate material.
Gauze comes in strips or on a roll with plaster already embedded into the weave. The strips are moistened in warm water to activate the plaster and wrung, then placed in layers onto the created form. The slurry sticks to itself and can also be somewhat manipulated and smoothed.
Once dry, Plaster Gauze is very hard - the gauze providing added structure and strength.