Ivo Air Purifier

Video:

Fits Noctua NF-A20 5V USB pc fan

Cut the fan frame with pliers and attach it mid-print with thick double sided adhesive tape

Cut hepa filters from a “Frameless hepa filter” (link1, link2)

add a “usb fan speed controller” (link) to adjust and increase USB fan speed.

for even higher fan speed, use a “12V motor speed regulator” (link) with a “12V power adapter” (link)