Description
Top class casting plaster, which is very fine, hard and strong. Used for the casting of finished pieces where a hard durable surface is important. Setting time 9-20 minutes. Plaster to water ratio 2.8kg/litre. Compressive strength (dry) 7054 psi. This plaster is also used for castings made with Plaster Polymer for extremely hard and high weather resistant applications.Prestia Basic SH Alpha is a high-quality hard plaster similar to Herculite 2 and Crystacal R, although not as hard as Crystacal. The expansion is much less, and it is slower setting. It is usually used for architectural mouldings as well as being used in modelling applications.
Plaster/Water Ratio: 35 to 40/100
Working Time: 10 Min.
Demould Time: 20-40 mins.
Expansion: 0.06%
Compressive Strength: 45 Mpa
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