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USG® No. 1 Moulding Plaster
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A ornamental plaster used for creating ornamental trim or running cornices.Designed for use where expansion control, hardness, and strength are not primary considerations.
Often referred to as plaster of Paris or soft plaster, USG® No. 1 Moulding Plaster is used to create waste molds or temporary patterns where surface hardness and strength are not crucial.
The plaster offers a controlled set that provides uniform workability, and its fine grain makes it ideal for producing sharp detail when used neat for cast work.
The cement requires 70 parts water by weight per 100 parts plaster, and after mixing, it sets in 27-37 minutes. It complies with ASTM C28. USG No. 1 Moulding Plaster is available in 50- and 100-pound bags.
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Rubber Mold Materials & Dry Pigments
Mold Making Materials
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