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Key Differences
| Mixed Viscosity | 4,400 cps | Variable |
| Mix Ratio By Volume | N/A (gram scale required) | 1A:1B |
| Pot Life | 20 minutes | 2 seconds |
| Cure Time | 16 hours | 3 hours |
| Shore D Hardness | 88 | 75 |
| Specific Volume | 17.6 cu. in./lb. | 25 cu. in./lb. |
| Color | Metal Gray | Off White |
| Tensile Modulus | 514,000 psi | 100,000 psi |
| Elongation @ Break | 1 % | 10 % |
| Compressive Strength | 8,420 psi | 5,000 psi |
| Compressive Modulus | 97,300 psi | 45,000 psi |
| Flexural Strength | 10,700 psi | 5,000 psi |
| Flexural Modulus | 86,000 psi | 153,000 psi |
| Shrinkage | 0.0006 in. / in. | 0.016 in. / in. |
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
| TASK™ 18 | EZ-Spray™ Plastic | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 4,400 cps | Variable |
| Mix Ratio By Volume | — | 1A:1B |
| Mix Ratio By Weight | 26A:100B | — |
| Pot Life | 20 minutes | 2 seconds |
| Cure Time | 16 hours | 3 hours |
| Shore D Hardness | 88 | 75 |
| Specific Gravity | 1.57 g/cc | 1.11 g/cc |
| Specific Volume | 17.6 cu. in./lb. | 25 cu. in./lb. |
| Color | Metal Gray | Off White |
| Tensile Strength | 3,250 psi | — |
| Tensile Modulus | 514,000 psi | 100,000 psi |
| Ultimate Tensile | — | 2,650 psi |
| Elongation @ Break | 1 % | 10 % |
| Compressive Strength | 8,420 psi | 5,000 psi |
| Compressive Modulus | 97,300 psi | 45,000 psi |
| Flexural Strength | 10,700 psi | 5,000 psi |
| Flexural Modulus | 86,000 psi | 153,000 psi |
| Shrinkage | 0.0006 in. / in. | 0.016 in. / in. |
| Heat Deflection Temp | 149 °F | 130 °F |
Product Description
TASK™ 18
TASK™ 18 is a relatively low viscosity aluminum filled urethane casting resin that was developed specifically for making short run vacuum forming or thermoforming molds.
When Parts A and B are mixed in proper proportion, TASK™ 18 cures overnight at room temperature with negligible shrinkage to a very hard plastic that has a very high compressive and flexural strength. Cured TASK™ 18 can be polished, machined, drilled, painted, etc. TASK™ 18 is also used to make industrial production parts, prototype parts and tracing patterns.
EZ-Spray™ Plastic
EZ~Spray™ Plastic is an improved version of our original sprayable polyurethane plastic compound. With higher impact resistance, this new spray plastic was specifically formulated to be mixed and sprayed via Smooth-On’s EZ~Spray™ Jr. Spray System. EZ~Spray™ Plastic is versatile and can be sprayed over a rubber mold to create “mother molds” or support shells. It can also be sprayed or meter mixed into rubber molds as a fast setting casting resin. Cured plastic is lightweight, tough and durable. EZ~Spray™ Plastic has a fast gel time for vertical surface application. Material cures in about 3 hours (depending on mass). Refer to the EZ~Spray™ Jr. Video Manual before spraying plastic.
Minimum Quantity Requirements Apply.