Rocket Bottle Fin Bracket
This is a simple bracket for holding the bottom edge of fins onto a bottle rocket.
The bracket is designed to fit a 1.5 litre shaped coke bottle (but I suspect it will fit any bottle). Three brackets are needed, and will hold 3 fins at 120 degree intervals.
The tabs on the brackets have two holes in them, allowing various fasteners to be used to attach the fins - I used garden wire.