Ender 3 rear electronics case lid for 90mm fan
thingiverse
I have problems with my TMC2208 getting hot with a 40mm fan, so I decided to upgrade to the 90mm low profile Noctua NF-A9x14 PWM, adapting (and later doing from scratch) the electronics lid installed on the back of my Ender 3. I strengthened the lid to prevent it from bending. Just pass the fan cable and connect it, then slide the lid and fit the fan in place. I added the f3d file in case you need to tune it up. Note: Only tested with Noctua 14mm low profile fan, beware with taller fans as they can hit the bed leveling wheels.
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