Bladeless Desk Fan

A "bladeless"/coanda effect USB-powered desk fan.

Assembly instructions:

• Option 1 (low power, low skill, no tools):

  • Purchase USB-powered 50-mm PC fan such as this one from Amazon.
  • Print out base, cone, and body (without USB port)
  • Assemble as shown, passing the fan wire through the hole in the bottom of the body
  • Glue everything together. Superglue or hot glue should work fine.
• Option 2 (higher power, higher skill, requires soldering):
  • Purchase 12V 50-mm PC fan, such as this one from Amazon
  • Purchase Adjustable output USBC PD board such as this one from Amazon
  • Solder appropriate pads on the USBC board to select 12V output
  • Solder fan leads to output pads on the USBC board
  • Print out base, cone, and body (with USB port)
  • Assemble everything as shown, pressing the USBC board into the hole in the back of the body. If you bought a different USBC board you may have to modify the hole slightly.
  • Glue everything together. Superglue or hot glue should work fine.

I printed this out in wood-filled PLA and stained it. It would look pretty nice if I bothered to sand it more prior to stain.