With a little programming know-how, you can use this project to define your own model rocket, and print it. Depending on your printer and how you print your rocket parts, you can print a complete rocket in under two hours. All you have to do is is snap it together, add an engine, and off you go.
You can find out more information from the rockit wiki. You can also check out the instructables write up here.
mini_engine_body.stl | 1.0MB | |
mini_engine_nosecone.stl | 12.5MB | |
mini_engine_tail.stl | 1.6MB | |
rocket_tail.stl | 1.7MB |