These are more accurately described, I think, as paper darts - the lack of camber in particular, makes this more of a dart design tool. But! Its a step closer

These are more accurately described, I think, as paper darts - the lack of camber in particular, makes this more of a dart design tool. But! Its a step closer to having a real airplane design tool .. if they can layer the wings and produce camber using the same simple cutout techniques, then we have something even more useful for the budding junior pilots of tomorrow to use to learn how things fly. (Disclaimer: I'm working on an airplane printer. You turn a handle, feed in raw materials, and get a flying product at the other end of the box. I'm focusing on Kline-Fogelmann wing style, since its a very easy and workable camber technique .. hope to have something to report to HN about the project soon..)