Fin Jig V2

Warning: As it is, it sucks at the moment; the arms snap off very easily and are very flimsy even when they work. I'm going to fix it in the near future, but for now, I do not recommend.

This is a parametric fin jig. You can open it in OpenSCAD and adjust the number of fins and diameters. The default is optimized for a 66mm rocket with 3 roughly 0.125 inch think bass or balsa fins on an Ender 3 Pro.

Just print whatever settings have worked for you.