Uploaded April 2026 | Updated September 2026, 2 weeks ago
ApogeeRockets.com -
Quick & Easy Epoxy Fin Fillets: Strengthening the SpaceshipTwo-ish Rocket for Flight!
Continue the SpaceshipTwo-ish model rocket build with us in this essential episode of Advanced Construction Videos, where we focus on adding epoxy fin fillets to every joint, ensuring your rocket has the structural integrity needed for safe, high-performance launches. These fillets provide critical reinforcement, turning a good build into an exceptional one ready for finishing and flight.
Here's how we make it happen, step by step, using simple tools and techniques anyone can follow:
Begin by mixing the epoxy and transferring it into a plastic bag, turning the bag almost inside out to create a handy "cup" for easy handling, then pushing all the epoxy into one corner just like a professional cake decorator prepares a piping bag.
Wear protective gear like a mask for safety, cut a small tip on the bag to control the flow, and squeeze out thin beads of epoxy precisely along each joint, starting with just a little at a time to avoid excess.
Smooth the fillets right away with a tool or finger for a clean finish, filling any gaps seamlessly as you go, and scoop back any overflow to keep things neat and efficient.
Once all joints are covered—from fins and pods to strakes—wipe away globs with rubbing alcohol to flatten and shape them while the epoxy is still workable, making sanding much easier later.
Set the rocket aside to cure fully, paving the way for the finishing process that will polish your build to perfection.
This straightforward method saves time, minimizes mess, and delivers pro-level strength without complicated setups. Whether you're new to rocketry or refining your skills, you'll gain confidence in applying fillets that hold up under thrust.
Find all your building essentials: Kits, motors, epoxies, supplies, and electronics at ApogeeRockets.com. Learn, shop, build, and fly!
Like, subscribe, and turn on notifications for more detailed rocketry tutorials. Tell us in the comments: How do you apply your fillets? #ModelRockets #EpoxyFillets #RocketBuilding #SpaceshipTwo
ApogeeRockets.com -
Quick & Easy Epoxy Fin Fillets: Strengthening the SpaceshipTwo-ish Rocket for Flight!
Continue the SpaceshipTwo-ish model rocket build with us in this essential episode of Advanced Construction Videos, where we focus on adding epoxy fin fillets to every joint, ensuring your rocket has the structural integrity needed for safe, high-performance launches. These fillets provide critical reinforcement, turning a good build into an exceptional one ready for finishing and flight.
Here's how we make it happen, step by step, using simple tools and techniques anyone can follow:
Begin by mixing the epoxy and transferring it into a plastic bag, turning the bag almost inside out to create a handy "cup" for easy handling, then pushing all the epoxy into one corner just like a professional cake decorator prepares a piping bag.
Wear protective gear like a mask for safety, cut a small tip on the bag to control the flow, and squeeze out thin beads of epoxy precisely along each joint, starting with just a little at a time to avoid excess.
Smooth the fillets right away with a tool or finger for a clean finish, filling any gaps seamlessly as you go, and scoop back any overflow to keep things neat and efficient.
Once all joints are covered—from fins and pods to strakes—wipe away globs with rubbing alcohol to flatten and shape them while the epoxy is still workable, making sanding much easier later.
Set the rocket aside to cure fully, paving the way for the finishing process that will polish your build to perfection.
This straightforward method saves time, minimizes mess, and delivers pro-level strength without complicated setups. Whether you're new to rocketry or refining your skills, you'll gain confidence in applying fillets that hold up under thrust.
Find all your building essentials: Kits, motors, epoxies, supplies, and electronics at ApogeeRockets.com. Learn, shop, build, and fly!
Like, subscribe, and turn on notifications for more detailed rocketry tutorials. Tell us in the comments: How do you apply your fillets? #ModelRockets #EpoxyFillets #RocketBuilding #SpaceshipTwo
