is a hobby in which participants experiment with fuels and make their own rocket motors, launching a wide variety of types and sizes of rockets. Amateur rocketeers have been responsible for significant research into hybrid rocket motors, and have built and flown a variety of solid, liquid, and hybrid propellant motors. On May 17, 2004 Civilian Space eXploration Team (CSXT) successfully launched the first amateur high-power rocket into space, achieving an altitude of 72 miles (115 km). Prior to that the Reaction Research Society on November 23, 1996 launched a solid-fueled rocket, designed by longtime member George Garboden, to an altitude of 50 miles (80 km) from the Black Rock Desert in Nevada. Stitch and glue is a simple boat building method which uses plywood, epoxy glue, and "stitches" and eliminates the need for stems and chines. Plywood panels are cut to detailed profiles and stitched together to form an accurate hull shape, without the need for forms or special tools. This technique is also called "tack and tape", and "stitch and tape". Gallery Notes Homebuilt aircraft Kit cars Amateur radio Hobbies