Hello to the community,
I bought my Ender 3V2 a month ago and appreciate to communicate in forums like this. One argument to buy was the announcement of a special motor driving electronic for extra silent operation.
Several models have been printed successful, so I'm satisfied generally with the quality of the printer.
But there is one thing which is annoying to me, the noisy operation of the cooling ventilators.
There is a high frequency sound (also ultrasonic?) coming from the radial ventilator for cooling the extruded filament, resp. bed cooling.
Is there something to bring it to a more silent operation, like the axial ventilator, which only produces a white noise?
I disassembled the hotend and found, that the ventilator itself does not produce that sound, it must be the design of the Housing which interferes with the ventilator.
Help for sound reduction is highly welcome.