Foam board 90 degree bracket
thingiverse
Super quick and simple 90 degree bracket for foam board aircraft. I don't like using hot glue, so I put adhesive down where it needs to go, and for the fuselage I use these angles with a small dab of foam safe CA glue to keep it's shape while the glue dries. Also has an added benefit of a small amount of added rigidity to the foam. The small divots in it are to cut a tiny bamboo or CF skewer and glue them for even more rigid setups.
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