Model Rocket fin alignment
thingiverse
Model Rocket Fin Alignment Tool. Slots on the bottom of the base and mating fin Arms are designed with a 5 degree draft to ensure they fit together perfectly, regardless of printer tolerances. They should not push all the way in for a tight fit. Four bases are included, one for each standard model rocket thickness: 13mm, 18mm, 24mm, and 29mm. Fin arms are provided for both 1/8" thick Fins and 1/16" thick Fins. Each size comes with a Standard configuration, a Tall Plate option, wide Arm options, and a combination of wide and Tall configurations. The bases are marked to show exactly where to install the arms for rockets with three or four fins. Note: Only the 18mm base and two standard fin arms have been thoroughly tested so far. Update: On February 21, 2019, the fit between the base and fin support Arms was tightened.
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