Hi
I have a vibrating or scratching noise coming from my ender 6 and can’t find the problem. I was thinking belts but the sound is only when the Alu profile with the nozzle on moves backward or forwards (srry for my very technical explanation 
) also weird the sound gets less when I leave the doors open but doesn’t go away completely. It works perfect for many prints this is my first problem with it and the prints are stil perfect only the noise is bad for my neighbors