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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 410 cps | 1,200 cps |
| Pot Life | 8.5 minutes | 15 minutes |
| Cure Time | 2 hours | 16 hours |
| Shore D Hardness | 58 | — |
| Shore A Hardness | — | 60 |
| Specific Volume | 41.3 cu. in./lb. | 26.9 cu. in./lb. |
| Color | Beige | Clear Amber |
| Elongation @ Break | 1.6 % | 650 % |
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
| Feather Lite™ | PMC™-746 Clear Amber | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 410 cps | 1,200 cps |
| Mix Ratio By Volume | 1A:1B | 2A:1B |
| Mix Ratio By Weight | — | 2A:1B |
| Pot Life | 8.5 minutes | 15 minutes |
| Cure Time | 2 hours | 16 hours |
| Shore D Hardness | 58 | — |
| Shore A Hardness | — | 60 |
| Specific Gravity | 0.67 g/cc | 1.03 g/cc |
| Specific Volume | 41.3 cu. in./lb. | 26.9 cu. in./lb. |
| Color | Beige | Clear Amber |
| Die C Tear Strength | — | 100 pli |
| Tensile Strength | — | 700 psi |
| Tensile Modulus | 156,000 psi | — |
| Ultimate Tensile | 2,160 psi | — |
| Elongation @ Break | 1.6 % | 650 % |
| 100% Modulus | — | 220 psi |
| Compressive Strength | 3,070 psi | — |
| Compressive Modulus | 53,700 psi | — |
| Flexural Strength | 3,440 psi | — |
| Flexural Modulus | 164,300 psi | — |
| Shrinkage | 0.003 in. / in. | < .001 in. / in. |
| Heat Deflection Temp | 140 °F | — |
Product Description
Feather Lite™
Feather Lite™ is a heavily filled low-density urethane casting resin. Cured plastic is lightweight (it floats in water!) and has a much lower density than other casting resins.
Feather Lite™ features a convenient 1A:1B by volume mix ratio and mixes easily (pre-mixing of parts A & B is necessary). Cured plastic is strong and can be carved, machined, drilled, sanded, etc. Feather Lite™ can be pigmented with SO-Strong™ color tints prior to casting and finished castings can be painted. And because this product is low-density, it yields more plastic per pound/kg. than other casting resins, the cost per casting is low. Feather Lite™ can be used for a variety of art or industrial design related applications including reproducing sculpture, making fishing lures, prototype model making, casting doll heads and figures, etc.
PMC™-746 Clear Amber
PMC™-746 urethane rubbers were developed to make molds for casting gypsum plasters. Like PMC™-744, this product is well suited for use as a rubber case mold – especially large case molds where extra rigidity is required. Shore hardness is 60A. Because of its durability and moisture resistant properties PMC™-746 urethane rubbers are also used by zoos and museums for a variety of mold-making, display and exhibit applications. They feature a convenient mix ratio (2:1 by weight or volume), and contain no mercury.
Other applications include making plaster block molds, reproducing ornamental plaster (architectural restoration), pre-cast concrete molds, casting waxes, Smooth-On rigid polyurethanes and epoxies and also for making a variety of special effects for movies and theatre.
What’s the Difference? The color of cured original PMC™-746 ranges from amber to blue from batch to batch due to variability in raw materials. Cured PMC™-746 Clear Amber is clear amber in color and will be the same color batch to batch.