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Key Differences
| Product Type |
|
|
| Mixed Viscosity | Variable | 3,000 cps |
| Mix Ratio By Volume | 3 Parts Powder : 1 Part Water By Volume | N/A (gram scale required) |
| Cure Time | 90 minutes | 2 hours |
| Shore D Hardness | — | 85 |
| Color | White | Beige |
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
| Matrix Dryve™ | Smooth-Cast™ 385 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Variable | 3,000 cps |
| Mix Ratio By Volume | 3 Parts Powder : 1 Part Water By Volume | — |
| Mix Ratio By Weight | 100 Parts Powder : 27 Parts Water by Weight | 1A:5B |
| Pot Life | 20 minutes | 20 minutes |
| Cure Time | 90 minutes | 2 hours |
| Shore D Hardness | — | 85 |
| Specific Gravity | — | 1.60 g/cc |
| Specific Volume | 17.45 cu. in./lb. | 17.3 cu. in./lb. |
| Color | White | Beige |
| Tensile Strength | 3300 - 5500 psi | 3,100 psi |
| Tensile Modulus | — | 400,000 psi |
| Elongation @ Break | — | 1 % |
| Compressive Strength | 6500 - 9500 psi | 8,500 psi |
| Compressive Modulus | — | 400,000 psi |
| Flexural Strength | — | 5,900 psi |
| Flexural Modulus | — | 433,000 psi |
| Shrinkage | — | 0.0006 in. / in. |
| Heat Deflection Temp | — | 135 °F |
| Useful Temperature (max) | 200 °F | — |
| Density | 99 lbs lb/ft³ | — |
| Flexural Strength on 6 ply / 10 oz. Laminate | 7500 - 9800 psi | — |
| Freeze / Thaw Resistance | 300 cycles | — |
| Impact Resistance | 175 in lb / in² | — |
| Water Absorption | 0.5 ‰ after 24 hour water soak | — |
Product Description
Matrix Dryve™
Matrix Dryve™ is a versatile all-powder polymer modified gypsum system that has superior physical and performance properties compared to regular gypsum products. It is an “all-powder” alternative to our original Matrix™ NEO powder/liquid system.
Smooth-Cast™ 385
Smooth-Cast™ 385 is a mineral filled urethane casting resin that is very hard and durable. When Parts A and B are mixed in proper proportion (1A:5B by weight), Smooth-Cast™ 385 cures at room temperature with virtually no shrinkage. This rigid urethane casting resin has high compressive and flexural strength. Fully cured castings are tough, machinable and paintable.
Color effects are possible by adding pigment dispersions. They resist moisture and mild solvents. Smooth-Cast™ 385 is ideal for making industrial production parts, foundry patterns, vacuum forming molds, and some ceramic applications