Ender 3 40x40mm Cooling fan attachment

thingiverse

Upgrading my Ender 3, I wasn't thrilled with the stock blower fan's performance for part cooling, so I designed and built a custom attachment to hold a robust 40x40mm fan - the same reliable model I use for hotend cooling.\r\nI opted for a sturdy 10mm thick fan; if you prefer, you could upgrade to a more powerful 20mm fan instead.\r\nTo secure it in place, I utilized the same four mounting bolts that came with the original stock fan, but had to shorten them slightly using pliers, as they weren't strong enough, and risked hitting the internal fan when inserted.\r\nThis custom attachment allows the fan to sit off-center, ensuring it won't interfere with the X belt tension bracket.\r\nAdditionally, I created a supplementary airflow support that complements this design; you can find it here: https://www.thingiverse.com/thing:4459778