Another Bottle Rocket Fin Design.

This is another bottle rocket fin design, it is easy and quick to print multiples. I designed it with many tapers and angles to be the most aerodynamic. The bottom is concave to the diameter of a 2 liter bottle, so print it with supports. Attach these to the bottle with superglue or rubber cement. I would use 3 of them on 1 rocket, or you could use 4.