Free Form™ AIR Fire Safe is a lightweight epoxy putty that certifies to the highest flame rating available (E84, Class A). This is a low odor, low shrinkage putty that is unique, inexpensive and easy to use. Free Form™ AIR Fire Safe is mixed by hand with a 1A:1B by volume mix ratio. It offers a long working time and cures overnight at room temperature to a rigid epoxy that is very strong. It can be sanded, shaped and drilled. It will readily accept any paint. Free Form™ AIR Fire Safe can also be color pigmented with UVO™ or Ignite™ colorants.