A model rocket created in creo elements direct modeling express 4.0, intended to use 24 mm motors. Be warned-it probably flies, but my 3d printer is broken, so I can't be sure. This fits some a motors, b motors, and some c motors.Print the nosecone with support. Loop a rubber band through the nose, and fold some paper, with glue over the other end of the rubber band, Estes style. Glue the paper to the inside of the body, an inch or 2 down. Attach a streamer (can be made of electricians tape, duct tape, etc) to the rubber band. Launch the rocket as you usually would, but with more caution. And lastly: to see more cool projects, visit my blog, Dec's Tech, at wordpress!