May 21, 2019 3 min read

Although using epoxy is very easy to use, this does not mean its dummy proof. There is still time when even the smartest person can make a mistake. AtMaverick Composites, we are here to make sure that you know how to fix epoxy mistakes in case they ever happen. When it comes to clear casting epoxy, we are the experts to trust. We have all the expertise on UV resin. We are available to everyone in the United States.

How To Fix Common Epoxy Mistakes

The following is a list of common mistakes that are made when using UV resin or epoxy and how to fix them:

  • The epoxy mixture has not cured after the recommended cure time has passed.
    • Off-ratio: Too much or too little hardener will affect the cure time and thoroughness of the cure.
      • Remove epoxy. Do not apply additional material over non-curing epoxy.
      • Check that you’re using the correct number of pump strokes: Use equal strokes of epoxy resin and hardener. DO NOT add extra hardener for a faster epoxy cure!
      • Check for the correct pump and pump group size.
      • Check the epoxy pump rating.
    • Low temperature: epoxy mixtures cure slower at low temperatures.
      • Allow epoxy extra curing time in cool weather.
      • Apply heat to maintain the epoxy’s chemical reaction and speed the cure.
      • Use 205 Fast Hardener, designed to cure with epoxy resin at lower temperatures.
    • Insufficient mixing.
      • Remove epoxy. Do not apply additional material over non-curing epoxy.
      • Mix epoxy resin and hardener together thoroughly to avoid resin-rich and hardener-rich areas.
      • Only add fillers or additives after epoxy resin and hardener have been thoroughly mixed.
    • Incorrect products.
      • Remove epoxy. Do not apply additional material over non-curing epoxy.
      • Check the compatibility of epoxy resin and hardener. Epoxy resin will not cure properly with other brands of epoxy hardener or with polyester catalysts.
  • Epoxy bond failure
    • Insufficient cure.
      • See above.
    • Resin starved joint: epoxy has wicked into porous surfaces leaving a void at the joint.
      • Wet out bonding surfaces with neat epoxy mixture before applying thickened epoxy. Re-wet very porous surfaces and end grain.
    • Contaminated epoxy bonding surface.
      • Clean and sand the surface following the procedure in the Surface Preparation. Sand wood surfaces after planing or joining.
    • Bonding area too small for the load on the joint.
      • Increase bonding area by adding epoxy fillets, bonded fasteners or scarf joints.
    • Too much clamping pressure squeezed epoxy out of the joint.
      • Use just enough clamping pressure to squeeze a small amount of epoxy from the joint.
  • Clear epoxy turned cloudy
    • Moisture from condensation or very humid conditions reacts with components in the uncured epoxy hardener.
      • Apply moderate heat to partially cured epoxy coating to remove moisture and complete cure.
      • Use 207 Special Clear Hardener for clear coating applications and for bonding thin veneers where epoxy may bleed through to the surface.
    • Entrapped air in epoxy from aggressive roller application.
      • Apply epoxy coating at warmer temperature–epoxy is thinner at warmer temperatures.
      • Apply epoxy in thin coats.
      • Apply moderate heat to release trapped air from epoxy and complete cure.

Call Us Today

Sometimes when applying epoxy, there are many times where mistakes can be made. Let us help. Get your UV resin and clear casting epoxy with us! If you have any questions about working with epoxy resin, please do not hesitate to call. We have the most experienced staff in the industry, and for no additional cost, we will be happy to answer all of your questions and walk you through the entire process. We are located in Jupiter, FL.Call us now! We ship anywhere across the United States.