Here's yet another fan duct for the Ender 3. The goal of this was to design something simple, clean, and solid that works with the stock fans and hardware and can be printed without supports as long as your printer can handle a 16 mm bridge and 45 degree overhangs.

If you've upgraded or plan to upgrade to a larger 5015 part cooling fan check out my new upgraded design here: https://www.thingiverse.com/thing:4528533

Or also check out my more recent dual 5015 blower duct design: https://www.thingiverse.com/thing:5750189

The V59 file adds a hole behind the fan to access the top mounting screw straight on rather then from the side with a ball end allen wrench as shown in my photos. I haven't bothered to actually print this version myself yet to verify how well it works, since the V52 currently on my machine works fine. So I left the old files here.

Post-Printing

Remove the stock Ender 3 fan cover

Pre-install the mounting screws

Attach the duct to the hot end backplate, passing the cable through the slot on the back

Attach the duct to the hot end back plate with the two stock screws

Install the hot end fan passing the fan wires into this pocket

Install the hot end fan with the stock screws.

Install the hot end cable cover

Install the cooling fan with the stock screws

How I Designed This ===================

Fusion360 Screen Shot

Video =====

Instructional video by www.3dprintscape.com

Category: 3D Printer Accessories