Epoxies are very strong 2 part adhesives that stay liquid until the 2 parts are mixed, and are the preferred adhesive for mid or high power rocket construction.  Depending on the type of adhesive, the epoxy sets in 5, 15, 30, or more minutes, giving you different amounts of time to work with the parts.  For some work, you'll want a fast curing epoxy, but for others, you'll need extra time to make sure your parts are in the right position. Longer curing epoxies tend to be runnier, and shorter curing epoxies tend to be more viscous. The chemical reaction between the 2 parts produces a distinct period of heat just before it sets up that is more noticeable in quicker curing adhesives. When you feel the heat, finish up your work pronto. A Dremmel is often the only way to undo epoxy.

Some epoxies are more heat resistant than others, though some heat resistant epoxies are brittle, and can crack on hard landings that would not phase more flexible epoxies.

  • J-B Weld High Temperature Epoxy

    J-B Weld

    J-B Weld Epoxy (2 oz Twin Tubes)

    MSRP: $5.50
    J-B Weld is a recommended high temperature epoxy for securing motor retainers to motor tubes to ensure the nozzle heat of large motors or long burn motors does not compromise the integrity of the bond. J-B Weld sets in 20 - 26 minutes and fully cures in...
  • Bob Smith Industries Mid-Cure 15 Minute Epoxy

    Bob Smith Industries

    Mid-Cure 15 Minute Epoxy

    This is the Goldilocks Momma Bear of BSI's 5-15-30 minute epoxy lineup, giving a moderate working time of approximately 10-15 minutes before it cures, which gives enough time to apply to a moderate surface area or to adjust parts for proper alignment...
  • Bob Smith Industries

    Quick-Cure 5 Minute Epoxy

    BSI's Quick-Cure™ Epoxy is is a fast curing epoxy with a brief 5 minute working time. It sets up quickly, which is great for applications that do not require a large area to be applied at once.  Its rated bond strength after its 15 minute full...
  • Bob Smith Industries Slow Cure 30 Minute Epoxy

    Bob Smith Industries

    Slow-Cure 30 Minute Epoxy

    The 30 minute working time of BSI's Slow-Cure™ Epoxy is perfect for large projects that require a lot of epoxy over a large area, so long working time is helpful.  This is also the strongest of BSI's 5-15-30 minute series, able to produce...