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Key Differences

Product Type
  • Epoxy Putties
  • Epoxy Casting and Laminating Resins
  • Epoxy and Urethane Coatings
Mixed ViscosityDoughLight Paste
Barcol 935 Hardness87
Shore D Hardness5085
Specific Volume61.6 cu. in./lb.19.4 cu. in./lb.
ColorGreyWhite
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™ AIREpoxAcoat™ WHITE
Product Type
  • Epoxy Putties
  • Epoxy Casting and Laminating Resins
  • Epoxy and Urethane Coatings
Mixed ViscosityDoughLight Paste
Mix Ratio By Volume1A:1B5A:1B
Mix Ratio By Weight1A:1B100A:15B
Pot Life20 minutes
Thin Film Working Time40 minutes
Thin Film Recoat Time60 minutes
Tack Free Time4 hours
Cure Time16 hours
Barcol 935 Hardness87
Shore D Hardness5085
Specific Gravity0.45 g/cc1.43 g/cc
Specific Volume61.6 cu. in./lb.19.4 cu. in./lb.
ColorGreyWhite
Ultimate Tensile26,000 psi
Compressive Strength24,000 psi
Flexural Strength30,000 psi
Shrinkage0.00015 in. / in.
Heat Deflection Temp140 °F133 °F
Buoyant Force10.4 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.

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EpoxAcoat™ WHITE

EpoxAcoat™ RED, GREY, WHITE and NEUTRAL are thixotropic epoxy gel coats which are widely used for hand laminating and tooling applications. They are tough and strong surface coat resins which cure at room temperature and offer exceptional abrasion resistance. EpoxAcoat™ NEUTRAL is formulated “color neutral” specifically for adding color pigments and fillers. For high temperature applications (to 284°F / 140°C) use EpoxAcoat HT™ (see separate technical bulletin).

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