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Key Differences
| Product Type |
|
|
| Mixed Viscosity | Dough | Paste |
| Shore D Hardness | 50 | 70 |
| Specific Volume | 61.6 cu. in./lb. | 23.9 cu. in./lb. |
| Color | Grey | Off White |
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
| Free Form™ AIR | Plasti-Paste™ | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Dough | Paste |
| Mix Ratio By Volume | 1A:1B | 1A:3B |
| Mix Ratio By Weight | 1A:1B | 41A:100B |
| Pot Life | — | 10 minutes |
| Handling Time | — | 90 minutes |
| Cure Time | — | 24 hours |
| Shore D Hardness | 50 | 70 |
| Specific Gravity | 0.45 g/cc | 1.16 g/cc |
| Specific Volume | 61.6 cu. in./lb. | 23.9 cu. in./lb. |
| Color | Grey | Off White |
| Tensile Modulus | — | 168,100 psi |
| Ultimate Tensile | — | 1,600 psi |
| Elongation @ Break | — | 1.5 % |
| Compressive Strength | — | 3,420 psi |
| Compressive Modulus | — | 48,800 psi |
| Flexural Strength | — | 3,410 psi |
| Flexural Modulus | — | 150,000 psi |
| Shrinkage | — | 0.005 in. / in. |
| Heat Deflection Temp | 140 °F | 130 °F |
| Buoyant Force | 10.4 lb/ft³ | — |
Product Description
Free Form™ AIR
Free Form™AIR is an extremely lightweight epoxy putty suitable for an infinite variety of industrial and art-related applications. This is a low-odor, low shrinkage putty that is unique, inexpensive and easy to use. Free Form™AIR is mixed by hand with a 1A:1B by volume or weight mix ratio. It offers a long working time and cures overnight at room temperature to a hard, rigid epoxy that is very strong. Cured Free Form™AIR is so lightweight, it will float in water. It can be sanded, shaped, and drilled. It will readily accept any paint. Free Form can also be color pigmented with UVO™ or Ignite™ colorants.
Plasti-Paste™
Plasti-Paste™ is a two component fiber resin that is designed for vertical surface application. Part A is a liquid and Part B is a paste. Mix ratio is 1A : 3B by volume (41A:100B by weight). It has no odor and pot life is 8 – 10 minutes depending on mass. Demold time (can be handled) is about 90 minutes depending on mass. Plasti-Paste™ holds a vertical surface without sagging and cures to a strong, durable and lightweight plastic. Suitable as a mother mold / support shell (reinforces shape of rubber mold during casting). Can be pigmented with So-Strong™ color tints from Smooth-On. Add Ure-Fil™ 9 as an extender or for special effects.