Casting Plaster

Casting Plaster: This white, dry powder mixes with water to form a paste, which hardens over the course of an hour to create a solid material. It can be used to make casts of footprints or carvings, fill in gaps or cracks in walls, or (if applied over a cloth wrapping) create a splint for a broken bone. Hardened plaster has hardness 1 and 5 hp per inch of thickness. A 5-pound clay pot of plaster can cover about five square feet of flat space to a depth of one inch, five Medium forearm or lower-leg casts, or two full-arm or full-leg casts.

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