How to Glue Carbon Fiber Rods

Written by sean kotz
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How to Glue Carbon Fiber Rods
Carbon fibre rods can be used to reinforce RC aircraft wings for crash resistance among other things. (aeroplane image by Melissa Schalke from

Carbon fibre rods are used in a number of ways in model building, both for static kit builders looking for additional support for their structures and by RC modelers who use them to reinforce aeroplane wings and strengthen car frames. Carbon fibre rods are made by tightly combining carbon fibres with epoxy resin. As a result, they are incredibly strong and lightweight, but they can be a little difficult to bond if you do not know what you are doing. Fortunately, the process is fairly simple.

Skill level:

Things you need

  • High-speed rotary tool
  • High-density cut off wheel
  • Medium grit sand paper
  • Rubbing alcohol
  • Clean rags
  • Slow-set epoxy or cyanoacrylate glue
  • Toothpicks

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  1. 1

    Cut the ends of the rod flush using a high-speed rotary tool and a high-density cut off wheel, if necessary.

  2. 2

    Scuff the surface of both connecting ends using medium grit sand paper.

  3. 3

    Wipe down both rods on a clean rag with rubbing alcohol, and allow to dry.

  4. 4

    Mix a slow-set epoxy and apply to the carbon rod connection points with a toothpick. You also may use thin cyanoacrylate glue, though slow-set epoxy will give a stronger bond.

  5. 5

    Allow to cure for at least an hour before testing.

Tips and warnings

  • Slow-set epoxies generally require 15 to 30 minute set times.
  • A small bit of painter's tape can be helpful in holding the rods together while they cure. Lay the tape with the sticky side up, bond the ends, then lower the rods onto the tape and wrap.
  • Do not use large amounts of epoxy or glue. If there is too much, it will overflow and stick to the surface upon which it rests.

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