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How to incorporate thickener and fillers into General Purpose Epoxy

If you prefer to mix your own putties, pastes, or thickened epoxy concoctions, here a couple of guidelines:

The correct sequence for making your own recipes:

  1. Correctly measure and mix General Purpose resin/hardener. 
  2. Add fibrous fillers like milled or chopped glass, or mini-fibers and mix well.
  3. Add bulking agents, like microspheres and mix well.
  4. Add thixotropic agent like fumed silica, or wood flour and mix well.

Please see The Epoxy Book Section VII C - Modifying Epoxy with Fillers for more information. 

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