Three-Piece Compressed Air Rocket
thingiverse
Updated verion of this rocket:http://www.thingiverse.com/thing:120753 with a printed center section rather than paper. This version includes the whislte in the nose cone. Instructions Join the three pieces together with one or two layers of clear packing tape. Obviously these rockets should not be launched in toward the vicinity of people, pets, buildings, vehicles, etc!
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