Are the teeth worn down? Maybe it’s time to replace the gears. (Throwing stuff at the wall here) other than that it sounds like maybe there is a piece of filament stuck somewhere rubbing against the gear?
this post was submitted on 28 Jul 2025
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It doesn't appear so.
Oh what about that bearing? Maybe the bearing is going out?
Yea I'm gonna replace the bearings and see how that goes.
My printer currently sounds similar, also the extruder (i3 Mega MK4 X-Carriage w/ DD). It doesn't impact the print quality so far, but I really wonder what it could be.
In my case it's especially noteworthy that it only happens sometimes, depending in speed and current direction of the head. Perhaps this really is the sound of a bad bearing, with yours being really fucked already?
It sounds kind of like a bearing. Maybe from the top metal gear. Spray some lithium lube into the bearing?
Yea I'm gonna replace the bearings and see how that goes.
If the bearing is gone, that wont make it better. Best way would be dissasembly and then turning it to feel if it is bad.
Yeah if is completely gone it won't help but if the noise changes, he'll know it's the bearing.