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Model Rocket Fin Alignment Tool Jig

Model Rocket Fin Alignment Tool Jig, design preview, hero tilt

Design preview. Rendered from the file, not a photo.

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What it does

  • Aligns rocket fins at perfect right angles
  • Customizable for different rocket body diameters
  • Saves your rocket from spiraling on launch
  • A simpler DIY alternative to commercial Estes jigs
  • A staple for any model rocket builder's bench

You glue the fins on, hit the launch pad, and the rocket flies straight instead of spiraling into the wind. This alignment tool sets the fins at perfect right angles to the body tube, so the build goes from fiddly guesswork to a quick fixture job.

The fixture clamps over the body tube and aligns each fin at a precise 90 degrees.

Use it for school rocket projects, club builds, and personal flights. A small print that saves a real rocket.

12k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What you get

  • This design prints as one piece.
  • Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PLA. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.

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Who made this design

Designed by Justblair. We did not draw it.

Shared under Creative Commons, credit required. See the original design