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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 3,400 cps | Brushable |
| Mix Ratio By Volume | 2A:1B | N/A (gram scale required) |
| Pot Life | 15 minutes | 30 minutes |
| Shore A Hardness | 44 | 30 |
| Color | Beige | White |
| Tensile Strength | 300 psi | 577 psi |
| Elongation @ Break | 400 % | 300 % |
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
| PMC™-744 | Mold Max™ STROKE | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 3,400 cps | Brushable |
| Mix Ratio By Volume | 2A:1B | — |
| Mix Ratio By Weight | 2A:1B | 100A:10B |
| Pot Life | 15 minutes | 30 minutes |
| Thin Film Recoat Time | — | 60 minutes |
| Cure Time | 16 hours | 16 hours |
| Shore A Hardness | 44 | 30 |
| Specific Gravity | 1.01 g/cc | 1.18 g/cc |
| Specific Volume | 27.5 cu. in./lb. | 23.5 cu. in./lb. |
| Color | Beige | White |
| Die B Tear Strength | — | 125 pli |
| Die C Tear Strength | 90 pli | — |
| Tensile Strength | 300 psi | 577 psi |
| Elongation @ Break | 400 % | 300 % |
| 100% Modulus | 90 psi | — |
| Shrinkage | < .001 in. / in. | 0.002 in. / in. |
| Useful Temperature (min) | — | -65 °F |
| Useful Temperature (max) | — | 400 °F |
Product Description
PMC™-744
PMC™-744 has been used for years by mold making professionals to cast plaster, concrete, resins, etc. It is excellent for making molds that are strong, durable and dimensionally stable. Low viscosity ensures fine detail reproduction.
Mold Max™ STROKE
Mold Max™ STROKE is a brushable tin silicone rubber that self-thickens for making fast brush-on molds of almost any model. Properly applied, it will hold a vertical surface and will reproduce the finest detail. Mixed 100A:10B by weight, rubber quickly develops thixotropy and can be applied with a brush or spatula. Working time is 30 - 45 minutes with a re-coat time of 60 - 90 minutes depending on relative humidity. Cure time after the final layer has been applied is 16 hours at room temperature.
Mold Max™ STROKE silicone will not stick to most surfaces and will cure with negligible shrinkage to a strong, flexible Shore 30A rubber. 4 thin layers is all that is necessary to make a strong and durable production mold for casting wax, gypsum, concrete or resins (urethane, polyester, etc.). Applications include reproducing sculpture, architectural restoration, candle molds, etc.