vertical windmill - adjustable fin angles

thingiverse

If I direct air towards one side of this object, it rotates. By continuously adjusting it, I believe I can form concave blades. Four or more blades may be superior compared to three. Initially, a part broke off from the original design, but repairing it allowed for better functionality. The model had zero infill. The circular tabs on each blade did not print accurately, so I removed them using a knife and used a paperclip as an axle. A small amount of super glue secured the axles in place at both the top and bottom sections. One blade got stuck to the bottom part, but with careful use of a Stanley knife, it was successfully detached.