This thing was made with Tinkercad. Edit it online.

Print in 0.15mm

Just break the fins and insert those printed on the axis stick it and forward the music.

For 70 mm fan .

See editing video

https://www.facebook.com/PlanetMaker3D/videos/pcb.739508119730131/480185085795878/?type=3&ifg=1&__tn__=HH-R&eid=ARDspDTEvV45ZOs9twKRKlPd3qWijTM2_zfZhipWljT2qp6h2mALqMGLTTfyT4qctXtYV0ph7-eNQ8zT

https://www.facebook.com/PlanetMaker3D/videos/pcb.739508119730131/480185052462548/?type=3&ifg=1&__tn__=HH-R&eid=ARACSwn7Orf0zGEt7Dx7Hm-Je8Fxwv4QLI05Su4DgOIUL0NkhmTve2wkpP4CWP3Jkmi9zvFKzuI5933p

https://planetemaker3d.fr/