Crystacast Extra-Hard Plaster

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Crystacast Plaster is a very hard, fine plaster at the top of the Saint-Gobain Formula range. It gives an extremely hard, stone-like finish and is popular in the manufacture of sma ll highly ornamental miniatures such as tiny cottages and war-gaming pieces, and also things like exhibits and chess pieces that get handled and need to be tough and resilient. Plaster/Water Ratio: 100/28 Working Time: 18 Minutes Demould Time: 21 Minutes Expansion: 0.43% Compressive Strength: 70 MPa Shelf Life: 9 Months Show more