I got this printer literally yesterday, at first it was fine but after a few test XYZ cube prints it started making a breaking noise when the Z axis moves down! Please see the video!
I'm about to return it, but thought maybe I have misconfigured something!
I'm not 100 % sure where exactly the noise is coming from, the motor itself or the connection of the pole with the bed!
Note this only happens when the z axis is moving down, the other way around it is fine!
Also this might be helpful: it stops making the noise when it is 2/3 of the way down then it becomes smooth!