Ender 3 Pro part cooler for 40 mm axial fan
thingiverse
Small but powerful part cooler for 40 mm axial fans. I recommend a 40x40x20 mm fan. These are more powerful than the Noctuas but not to noisy. The mounting holes are compatible with the stock hotend case or my 60 mm hotend cooler. You can reuse the 2 mm screws from the stock cooler. PLA is possible but PETG is better if you are using high bed temperatures.
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