Rubber Band Copter

My contribution to the Kit Card Design Contest: the Rubber Band Helicopter. Easy to print and easy to assemble. No additional components required except:- a robust rubber band,- a drop of oil. How to print:Line width 0.4 mm, layer height 0.16 mm, first layer height 0.2 mm, no supports, don't print too fast. Or just use my print profile. Assembly:Please follow these building instructions, you can find the corresponding pictures above.Break out all individual parts from the kit card and remove any remaining fasteners (pictures 1 and 2).Put the axle into the round bearing plate and insert the rubber band (picture 3).Insert one half of the handle into the round bearing plate (picture 4).Add the second half of the handle, making sure that the two loops of the rubber band wrap around the arms of the second handle part (picture 5).Pull the two loops of the handle evenly over the second handle part (picture 6).Add a drop of oil to the contact surface between the bearing plate and the axle