Teenie Two was conceived as an airplane that could be built using only hand tools, things that would be possessed by the average person in the early 1970s. The philosophy was Keep It Simple. It was intended to be within reach of someone with no previous experience in building an airplane, or in metal work. To this end, the parts are laid out in such a way that they do not require complex jigs or frames of any kind. The materials were also selected because they could be obtained at a typical hardware store of the day.
