Top Fan Screwless
thingiverse
I have adapted the remix for the Pi4 version of the fan screwless from haz1 https://www.printables.com/de/model/4273-raspberry-pi-4-top-screwless-fan-mount-3040mm-noct to the Pi3 version vor the 30mm fan.
Download Model from thingiverse
With this file you will be able to print Top Fan Screwless with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Top Fan Screwless.