hydrocal Twin Pack
Size: 2-50 Pounds
Sold per Twin Pack
hydrocal is stronger than molding plaster, but is heavier, less porous, and easier to paint. Normal mixing consistency for best strength and to makes a pourable slurry is 40 to 43 parts water to 100 parts hydrocal by weight. Average compressive strength dry is 5500 lbs. per square inch.
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