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Free Form™ AIR HT

Alja-Safe™ Acrobat vs. Free Form™ AIR HT

High Temperature Epoxy Dough

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Alja-Safe™ Acrobat

Alja-Safe™ Acrobat vs. Free Form™ AIR HTFree Form™ AIR HT

Fiber-Reinforced “Non-Sag” Life Casting Alginate

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Key Differences

Product Type
  • Epoxy Putties
  • Lifecasting Materials
  • Skin Safe FX Materials
Mixed ViscosityDoughVariable
Pot Life150 minutes5 minutes
Cure Time16 hours8 minutes
Shore D Hardness55
Specific Volume54.31 cu. in./lb.26 cu. in./lb.
ColorGreyOff 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 HTAlja-Safe™ Acrobat
Product Type
  • Epoxy Putties
  • Lifecasting Materials
  • Skin Safe FX Materials
Mixed ViscosityDoughVariable
Mix Ratio By Volume2A:1B1 Part warm water (80° F / 27° C) to 1 Part Alja-Safe Acrobat® powder
Mix Ratio By Weight2A:1B3 parts water to 1 part Acrobat® by weight
Pot Life150 minutes5 minutes
Cure Time16 hours8 minutes
Shore D Hardness55
Specific Gravity0.51 g/cc
Specific Volume54.31 cu. in./lb.26 cu. in./lb.
ColorGreyOff White
Heat Deflection Temp300 °F
Heat Deflection With Post Cure400 °F

Product Description

Free Form™ AIR HT

Free Form™ AIR HT is a low density, lightweight epoxy putty that offers high temperature resistance to 300°F/149°C when cured at room temperature and 400°F/204°C when heat post cured. This is a low-odor, low shrinkage formula that is easy to use. Free Form™ AIR HT is mixed by hand with a 2A: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 with modeling board-like properties. It can be sanded, shaped, drilled, tapped and CNC machined/routered.

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Alja-Safe™ Acrobat

Alja-Safe™ Acrobat™ is a fiber reinforced "non-sag" version of original Alja-Safe™ life casting alginate. Acrobat™ is thicker and holds vertical surfaces allowing the user better control for making molds of the face, torso, etc. Acrobat™ reproduces perfect detail from all body surfaces and is good for making temporary molds that can be used to make highly detailed reproductions cast in wax, plaster, platinum cure silicone or Smooth-Cast™ 300Q ultra-fast urethane resin.

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