C
mpare
T
l
Key Differences
| Product Type |
|
|
| Mixed Viscosity | 21,000 cps | 200 cps |
| Mix Ratio By Volume | N/A (gram scale required) | 1A:1B |
| Pot Life | 60 minutes | 1 minute |
| Cure Time | 24 hours | 2 hours |
| Shore A Hardness | 36 | — |
| Specific Volume | 22.9 cu. in./lb. | 504 cu. in./lb. |
| Color | Blue | 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
| Smooth‑Sil™ 936 | FOAM-iT!™ 3 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 21,000 cps | 200 cps |
| Mix Ratio By Volume | — | 1A:1B |
| Mix Ratio By Weight | 100A:10B | 100A:87B |
| Pot Life | 60 minutes | 1 minute |
| Tack Free Time | — | 20 minutes |
| Cure Time | 24 hours | 2 hours |
| Shore A Hardness | 36 | — |
| Expansion (approximate) | — | 18 times |
| Foam Density | — | 3 lb/ft³ |
| Specific Gravity | 1.21 g/cc | 0.05 g/cc |
| Specific Volume | 22.9 cu. in./lb. | 504 cu. in./lb. |
| Color | Blue | Beige |
| Die B Tear Strength | 110 pli | — |
| Tensile Strength | 550 psi | — |
| Elongation @ Break | 500 % | — |
| 100% Modulus | 180 psi | — |
| Shrinkage | <0.001 in. / in. | — |
| Useful Temperature (min) | -65 °F | — |
| Useful Temperature (max) | 450 °F | — |
Product Description
Smooth‑Sil™ 936
Smooth-Sil™ Platinum Silicones cure at room temperature with negligible shrinkage. With different hardnesses to choose from, Smooth-Sil™ products offer tremendous versatility and are suitable for making production molds of any configuration, large or small. These silicones exhibit good chemical, abrasion and heat resistance. Materials such as plasters, concrete, wax, low-melt metal alloys or resins (urethane, epoxy or polyester) can then be cast into these silicone rubbers without a release agent.
Smooth-Sil™ 936 is a lower viscosity platinum silicone rubber (21,000 cps). It is easier to mix, vacuum degas and pour. Smooth-Sil™ Platinum Silicones are used for rapid prototyping, wax casting (foundries and candle makers), architectural restoration and for casting concrete.
FOAM-iT!™ 3
Smooth-On’s FOAM-iT!™ Series are two-component water blown rigid foams that are versatile and easy to use. FOAM-iT!™ products are available in 3lb., 4 lb., 5 lb., 8 lb., 10 lb.,15 lb. or 26 lb. per cubic foot densities. Parts A and B are measured and mixed in equal amounts by volume. The mixture is then poured into a mold or other form (apply release agent if necessary). The mixture will expand many times original volume (depending on which FOAM-iT!™ product you are using) and develop a uniform cell structure. FOAM-IT!™ 3 is tack-free in about 4 - 6.5 minutes, developing handling strength in 20 minutes and full cure in 2 hours.
All FOAM-iT!™ products can be used as a straight casting material, backfill material for hollow castings (adds structural strength) or as an encapsulation material, etc. They can be color pigmented with SO-Strong™, UVO™ or IGNITE™ colorants and are used for a variety of art/ craft, industrial design and special effects applications.