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Key Differences
| Mixed Viscosity | 150 cps | 80 cps |
| Pot Life | 20 minutes | 3 minutes |
| Cure Time | 90 minutes | 10 minutes |
| Shore D Hardness | 80 | 70 |
| Color | White | Off White |
| Tensile Strength | 6,650 psi | 3,000 psi |
| Tensile Modulus | 290,000 psi | 138,000 psi |
| Elongation @ Break | 6 % | 10 % |
| Compressive Strength | 8,300 psi | 3,650 psi |
| Compressive Modulus | 78,000 psi | 45,800 psi |
| Flexural Strength | 9,500 psi | 4,500 psi |
| Flexural Modulus | 288,000 psi | 132,000 psi |
| Shrinkage | 0.0025 in. / in. | 0.01 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™ 3 | Smooth-Cast™ 320 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 150 cps | 80 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 115A:100B | 100A:90B |
| Pot Life | 20 minutes | 3 minutes |
| Cure Time | 90 minutes | 10 minutes |
| Shore D Hardness | 80 | 70 |
| Specific Gravity | 1.12 g/cc | 1.05 g/cc |
| Specific Volume | 24.7 cu. in./lb. | 26.4 cu. in./lb. |
| Color | White | Off White |
| Tensile Strength | 6,650 psi | 3,000 psi |
| Tensile Modulus | 290,000 psi | 138,000 psi |
| Elongation @ Break | 6 % | 10 % |
| Compressive Strength | 8,300 psi | 3,650 psi |
| Compressive Modulus | 78,000 psi | 45,800 psi |
| Flexural Strength | 9,500 psi | 4,500 psi |
| Flexural Modulus | 288,000 psi | 132,000 psi |
| Shrinkage | 0.0025 in. / in. | 0.01 in. / in. |
| Heat Deflection Temp | 134 °F | 140 °F |
Product Description
TASK™ 3
TASK™ 3 low viscosity, high performance casting resin offers superior physical and performance properties compared to our popular Smooth-Cast™ Series of general purpose casting resins. Vacuum degassing is not necessary and it offers the convenience of a 1A:1B by volume (115A:100B by weight) mix ratio.
TASK™ 3 is white. It has high tensile and flexural strength, as well as high flexural modulus. This plastic was formulated for a variety of industrial applications including pattern making and making prototype models. This resin is designed for casting in thicknesses up to ½” (1.27 cm). TASK™ Plastics are moderately priced and are available in trial kits, one-gallon, five-gallon, 55-gallon drum and totes.
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Smooth-Cast™ 320
The Smooth-Cast™ 320 Series consists of ultra-low viscosity casting resins that yield virtually bubble-free off-white castings. The Smooth-Cast™ 320 resins are sister products to our popular Smooth-Cast™ 300 Series of bright white plastics, but are easier to color using SO-Strong™ or Ignite™ color tints. Smooth-Cast™ 320 series is easy to mix and pour, offering the convenience of a 1A:1B by volume or 100A : 90B by weight mix ratio.
The Smooth-Cast™ 320 Series resins readily accept pigments and fillers (such as URE-FIL™ 3, 5 and 7 from Smooth-On). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast™ 320 Series resins include reproducing small to medium size sculptures, making prototype models, special effect props, decorative jewelry and taxidermy (bones, antlers, teeth etc.).