Ender-3 PSU fan duct silencer
thingiverse
I created a custom design for use with the Ender-3's power supply fan, scaling it to meet specific needs. WARNING: The internal voltage of the power supply is lethal and must be treated with extreme caution. Users are strictly prohibited from opening it. To redirect airflow, I carefully drilled a single 57mm diameter hole in the existing fan holes and securely fastened the fan duct outside using standard fan screws (view at http://bit.ly/2S6QOsQ). This ensured a tight fit on the aluminum plate. Upon testing, I measured a significant reduction of 6-8 decibels in noise levels from the power supply fan within my room.
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