Z Stepper hums/vibrates just slightly

I noticed that if you place your hand on the Z stepper when its stationary you can feel it hum just barely. It has a very slight vibration going on with it. The other steppers are completely still when felt. Is this normal or has anyone encountered this before?

One of the cable is loose I guess. It’s not normal. Because on stopped mode, it’s locking the position, if there is any loose connection, it hums.


I think I might want to go feel up my motors.

That didn’t sound right…

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Tightened them up and it went away thanks @AlanDavis!

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