A flying hand-launched propeller.Print with 0 extra shells w/ 15-20% infill.Glue top and bottom halves of prop hub together and insert the blades with the less curved side as the leading edge. (A small clamp, even a clothespin, is very handy for keeping it all together.)The stick should snap in without glue.Launch it by spinning it counter-clockwise, as quickly as possible, between your open palms. (Left hand remains stationary, right hand pushes away in the direction you want it to fly.)See who can get it through a hoola-hoop or get it to fly the highest/farthest! Aim for your friends! Torment your cat!WARNING! It's pointy and can move quickly and unpredictably so you be careful with dat.