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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 7,000 cps | Putty |
| Mix Ratio By Volume | N/A (gram scale required) | 20A:1B |
| Pot Life | 90 minutes | 3 minutes |
| Cure Time | 4 hours | 30 minutes |
| Barcol 935 Hardness | 93 | — |
| Shore A Hardness | — | 40 |
| Color | Black | Light Pink |
| Shrinkage | 0.001 in. / in. | 0.003 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
| EpoxAcast™ 650 BLACK + 102 Hardener | PoYo™ Putty 40 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 7,000 cps | Putty |
| Mix Ratio By Volume | — | 20A:1B |
| Mix Ratio By Weight | 100A:13B | 100A:6B |
| Pot Life | 90 minutes | 3 minutes |
| Cure Time | 4 hours | 30 minutes |
| Barcol 935 Hardness | 93 | — |
| Shore A Hardness | — | 40 |
| Specific Gravity | 1.52 g/cc | 1.30 g/cc |
| Specific Volume | 18.22 cu. in./lb. | 21.31 cu. in./lb. |
| Color | Black | Light Pink |
| Die B Tear Strength | — | 85 pli |
| Tensile Strength | — | 450 psi |
| Tensile Modulus | 1,503,000 psi | — |
| Ultimate Tensile | 6,000 psi | — |
| Tensile Elongation | 0.42 % | — |
| Elongation @ Break | — | 250 % |
| Compressive Strength | 16,350 psi | — |
| Compressive Modulus | 142,600 psi | — |
| Flexural Strength | 5,890 psi | — |
| Flexural Modulus | 710,000 psi | — |
| Shrinkage | 0.001 in. / in. | 0.003 in. / in. |
| Heat Deflection Temp | 129 °F | — |
| Useful Temperature (min) | — | -65 °F |
| Useful Temperature (max) | — | 400 °F |
Product Description
EpoxAcast™ 650 BLACK + 102 Hardener
EpoxAcast™ 650 Black is a mineral filled general purpose casting epoxy that is low cost and versatile. It features a low mixed viscosity for minimal bubble entrapment.
PoYo™ Putty 40
PoYo™ Putty 40 is a two-component mold making silicones (tin catalyst) that can be mixed and applied “on site” – directly to almost any model. PoYo™ Putty will hold any vertical surface and capture even the finest detail - perfect for making strong rubber molds that can be used within minutes.
PoYo™ Putty has been used to make molds of valuable antiques and archeological models and can be used to make fast molds of sculpture, prototypes, candles, picture frames, coins, etc. You can cast wax, gypsum and a variety of resins into PoYo™ Putty molds.