Blow molding, like most polymer processing operations, is not something that can be easily done by garage tinkerers. All the equipment, extruders, molds...all have high costs even for "lab scale" equipment. But that has all changed. George Fereday has invented a "personal blow molding gun", even taking the time to snap pictures of the short shots.
Small, lightweight and run by just 1 person - the perfect gift for the do-it-yourselfer.