Creality Ender 3 board fan guard

thingiverse

I tweaked the original design slightly by adding an overhang for a fan guard. This modification prevents plastic from being sucked into the case when it drops from the bed and nozzle. No support is needed for this print, as I used PLA filament with a 0.4mm nozzle and 0.2mm layer height. The finished part was installed on my Ender3 printer using a metal cover, secured with double-sided tape applied to the bottom for a precise fit.