HYDROSTONE GYPSUM CEMENT 25 Lbs $39 e

Description

Rock Hard Gypsum Cement – Hydrostone
25 lbs  for  $39
Description
One of the hardest and strongest of all gypsum cements, Hydrostone is recommended for producing high-quality novelty and statuary castings requiring extremely hard surfaces. This product is self-leveling when poured.
Physical Properties
Water/Powder Ratio
26-28ml/100g
Working Time
20-25 minutes
Setting Time
30 minutes
Setting Expansion
0.25%
Compressive Strength (1hr)
8,000psi
Compressive Strength (Dry)
10,000psi
Dental Plaster Type II
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