I used a fan I had lying around and soldered a usb connector to it. Glue in the nuts before assembling the 3d printed parts! Requires (x4) M4 Hex Nuts and Screws.
I used these carbon filter sheets and cut them to size: https://www.amazon.ca/Flexzion-Activated-Extractor-Replacements-Compatible/dp/B07VCC19GT
Use the SOLID filter for post processing custom zones in your slicer, see attached images for example.
The author marked this model as their own original creation.