Make your bike ride a little more fun with the small handlebar windmill.
The rotor should be printed without support, the bracket lying on its side with support everywhere but block the hole.
A 1,5 cm long piece of filament is used as an axis, which is melted at the end with a lighter to create the stop. The other end is carefully sharpened with a cutter knife or scissors and inserted with the attached rotor into the opening of the holder.
The bracket can be attached to the handlebars with a rubber band.
The author hasn't provided the model origin yet.