Clip On Fan Guard 40x40

thingiverse

I added a duct with a side-mounted fan on my Ender 3, similar to the Prusa design. The Sunon 4020 fan installation left no space for a screw-mounted fan grill without interfering with the X-end stop. Instead of using screws, I opted for a clip-on fan guard. The guard features cutouts for the screw heads and is flush with standard 3mm high screws. It has extensions on both sides to wrap around the bezel of the fan, along with small nubs intended to hook behind it. However, these nubs do not add significant grip and are best disregarded if they don't print clearly.