Ender 3 Noctua NF-A4x20 FLX stock type hot end
thingiverse
This is a custom Hot end cover designed to replace the stock Ender 3 or 3 Pro cover, providing a snug fit for the CR10 series as well. It has been extended specifically to accommodate a Noctua NF-A4x20 FLX 12v fan, which significantly reduces noise levels while maintaining excellent airflow. The entire design utilizes all original hardware. Please note that this fan operates at 12 volts, so you will need to adjust the voltage to match by using a step-down converter. I personally use small buck converters for fans and similar applications, as they are sufficient and do not require high amperage units. You can find an example of such a converter on Amazon: https://www.amazon.com/Regulator-DROK-Converter-Step-Down-Transformer/dp/B0758ZTS61
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