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Plaster
Plaster is one of the most flexible, versatile art materials made. Molds, sculpture, hobby crafts, medical and dental uses: plaster serves all these needs and more. We can help you determine which plaster is right for your intended application. All plaster is packaged in standard 50-pound bags. Other types of plaster and gypsum stone are available with minimum orders of 4,000 lbs.
USG1
Pottery #1
Formulated to provide stronger, more durable molds than regular pottery plaster. The standard of the moldmaking industry. SEE MIXING INSTRUCTIONS BELOW. |
| Mix Ratio: |
70 |
| Expansion |
0.210 |
| Crush PSI |
2000 |
| Set Time |
27-37 min |
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USG2
Molding Plaster
Great for plaster bats. A good utility plaster when expansion, hardness and strength are not of great importance. |
| Mix Ratio: |
70 |
| Expansion |
0.200 |
| Crush PSI |
2000 |
| Set Time |
27-37 min |
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USG3
Casting Plaster
Great for casting plaques and figurines. This general use industrial plaster is formulated for greater strength and chip resistance than regular plaster. Working properties and set time similar to Hydrocal White. SEE MIXING INSTRUCTIONS BELOW. |
| Mix Ratio: |
70 |
| Expansion |
0.200 |
| Crush PSI |
2000 |
| Set Time |
27-37 min |
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USG4
Dental Lab Plaster
A general dental application plaster with a set time between 6 and 9 minutes. |
| Mix Ratio: |
70 |
| Expansion |
0.210 |
| Crush PSI |
2000 |
| Set Time |
6-9 min |
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USG5
Impression Plaster
This is the fastest setting plaster from USG, with a set time of 3 to 5 minutes. SEE MIXING INSTRUCTIONS BELOW. |
| Mix Ratio: |
70 |
| Expansion |
0.210 |
| Crush PSI |
2000 |
| Set Time |
3.5-5 min |
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USG6
Hydrocal White Plaster
Our most general use plaster cement, it can be carved or added to, possesses excellent plasticity for workability, and a gradual setting time. Also has higher expansion properties. |
| Mix Ratio: |
45 |
| Expansion |
0.390 |
| Crush PSI |
5000 |
| Set Time |
25-35 min |
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USG11
Hydrostone Plaster
Hydrostone is an extremely hard and strong plaster. Its very low viscosity allows for excellent detail reproduction. Primarily used for high-quality art, novelty and statuary castings. Available in a non-yellowing formulation. Moderate expansion properties. |
| Mix Ratio: |
32 |
| Expansion |
0.240 |
| Crush PSI |
10,000 |
| Set Time |
17-20 min |
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USG12
Hydrocal 105 Plaster
This yellow dental stone is very similar to Hydrocal White, but tinted for dental work. |
| Mix Ratio: |
45 |
| Expansion |
0.390 |
| Crush PSI |
5,000 |
| Set Time |
25-35 min |
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Plaster Mixing Instructions
For USG1, USG2, USG3, USG4, and USG5:
| •
Mix should be 1½ parts plaster to 1 part water, measured
by weight. |
| • Dump plaster in water. |
| • Allow to soak for 2 minutes. |
| • Mix 2 minutes to heavy creme density. |
For USG11:
| • Mix should be 1 quart water to 7 pounds USG11. |
| • Dump plaster in water. |
| • Allow to soak for 2 minutes. |
| • Mix 2 minutes to heavy creme density. |
For USG6 & USG12:
| • Mix should be 1 quart water to 5 pounds USG6 or USG12.. |
| • Dump plaster in water. |
| • Allow to soak for 2 minutes. |
| • Mix 2 minutes to heavy creme density. |
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