It all started with the Water Rocket Launcher, that got me excited about designing and building water rockets! If you haven't printed this yet, I cannot recommend it enough!

Check out the custom nose cone generator if you haven't already!

This is a simple bottle rocket fin generator. It will allow you to adjust the number of fins, the size of the ring holding them, the thickness of the fins, and define a few points on the fins in order to test out what kinds of fins work the best! Just click customize to get started!

You can also play around with two different angles for the fins, I am calling them “spin” and “twist”. Spin will rotate the fins with respect to the short axis of the rocket, while twist will rotate them along the long axis of the rocket. I am not sure if either will actually play a role, although spin should cause the rocket to spin in the air. Feel free to try it out and let me know!