No.1 Moulding Plaster

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A general purpose plaster suitable for architectural, art, and support shell (mother mold) applications. Often referred to as "Plaster of Paris" or soft plaster. Used for waste mol ds or temporary patterns where surface hardness and strength are not important. Screeds well under a template but is not as hard or strong as HYDROCAL cement.USG Material Calculator PropertiesTechnical Properties Mix Ratio by Weight 70 parts water : 100 parts powder Cure Time (hand mixed) 27-37 min Compressive Strength 2,000 psi Technical Properties: Maximum Setting Expansion 0.200%Density Wet 99.0 lb/ft3Density Dry 69.0 lb/ft3Media USG PLASTER AND GYPSUM CEMENTS MIXING PROCEDURE Documentation Technical Bulletin Related ProductsRELATED PRODUCTS:Mixing Equipment Rubber Silicones Rubber Polyurethanes Show more