The book Experience Building the RotaryMek-10x Rubber Band Machine Gun by Julian Lyndon Marsh contains detailed instructions for constructing a fully automatic, rapid-firing, rubber band machine gun that can be loaded with up to 70 size 33 rubber bands at one time. A responsive trigger system allows the operator to choose between firing many short bursts or "letting rip, fire-hose style." Tools called for during construction include a drill press, band saw, and computer-based scanner and printer. The book Experience Building the RotaryMek-10x Rubber Band Machine Gun (ISBN 978-1477656723), is priced at $19.95.