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
Compressive Strength: 45 Mpa