Bamboo Copter Toy variable Angle of attack

thingiverse

This is a Bamboo Copter crafted in Open SCAD, where you can pick the angle of attack to suit your needs. The main goal here is to demonstrate in physics class that aerodynamic lift rises significantly with increasing angles of attack. So far, it's working remarkably well. The design allows for the printing of Copter blades while keeping the stem intact as a single chopstick. For optimal play, an angle of attack of 15° seems to be the sweet spot.