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Key Differences
| Product Type |
|
|
| Mixed Viscosity | Dough | 500 cps |
| Pot Life | 90 minutes | 6 minutes |
| Cure Time | 16 hours | 1 hour |
| Shore D Hardness | 85 | 75 |
| Specific Volume | 17.3 cu. in./lb. | 25.9 cu. in./lb. |
| Color | Grey | White |
Disclaimer
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Compare Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Compare Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.All Technical Data
| Free Form™ Habitat™ Fire Safe™ | TASK™ 21 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Dough | 500 cps |
| Mix Ratio By Volume | 1A:1B | 2A:1B |
| Mix Ratio By Weight | 1A:1B | 2A:1B |
| Pot Life | 90 minutes | 6 minutes |
| Cure Time | 16 hours | 1 hour |
| Shore D Hardness | 85 | 75 |
| Specific Gravity | 1.44 g/cc | 1.07 g/cc |
| Specific Volume | 17.3 cu. in./lb. | 25.9 cu. in./lb. |
| Color | Grey | White |
| Tensile Strength | — | 5,500 psi |
| Tensile Modulus | — | 270,000 psi |
| Elongation @ Break | — | 7.5 % |
| Compressive Strength | — | 7,100 psi |
| Compressive Modulus | — | 78,500 psi |
| Flexural Strength | — | 7,100 psi |
| Flexural Modulus | — | 250,000 psi |
| Shrinkage | — | 0.0058 in. / in. |
| Heat Deflection Temp | 160 °F | 144 °F |
| Heat Deflection With Post Cure | 212 °F | — |
Product Description
Free Form™ Habitat™ Fire Safe™
Free Form™ Habitat™ Fire Safe™ epoxy putty is a high density epoxy sculpting putty that is flame rated (E84, Class A). Habitat™ Fire Safe™ is solvent-free and contains no VOC’s. Working time is 90 minutes and cure time is 16 hours at room temperature (73° F/23° C). Epoxy cures to a very hard, flame and heat resistant material that is easily painted. Habitat™ Fire Safe™ does not contain any carcinogens (cancer causing agents).
TASK™ 21
TASK™ 21 is a performance urethane casting resin that has been described by many as having similar performance and mechanical characteristics to ABS plastic, with high compressive and flexural strength. TASK 21 has no odor and is easy to process. Mix ratio is 2A:1B by weight or volume. Pot life is 6 minutes and handling strength is reached in 60 minutes at room temperature (depending on mass and configuration).
TASK 21 features a low mixed viscosity of 500 cps and readily de-airs itself when cast into molds. SO-Strong™ or IGNITE™ colorants can be added for color and a variety of powder fillers can be added to alter performance or appearance characteristics. Applications for TASK 21 include rapid prototyping, casting strong and highly detailed models, making holding / assembly fixtures, figurines and decorative castings.
IMPORTANT - TASK 21 can not be cast into platinum-cure silicone molds. We recommend casting TASK 21 into tin-cure silicone or urethane rubber molds (using a release agent).