Loud Fan Noise on X-Axis Movement on MK4S

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Ron Williams

(@ron-williams)

Active Member

Loud Fan Noise on X-Axis Movement on MK4S

Though a recent reddit post I found out that I'm not alone with the loud X-Axis movement on the Prusa MK4S. I thought it was just me... I found out I could stop it by applying pressure on the center of the part cooling fan.

So I designed a new quiet fan cover that works better than my finger, and put it on Printables

I think the root cause of the sound is the natural resonance of polycarbonate. For examples, CD/DVD and Drivers Licenses are made from polycarb, and they make loud rattle when you drop them. I think the fan it reverberating in the case.

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