I think you are right about the resonant frequency. I was listening to it last night during a print of a circular piece and it did sound like something on the unit was vibrating at particular locations around the perimeter. I'll play around with the speeds.
Thanks

I have the V4 nozzle, not sure what Rev. E model is. PLA is my filament for now. Eventually I will expand my horizons.
Anyway, I re-leveled the bed and now it seems fine. Not sure if that was the culprit or not, but I'm good to go for now.

I can do that tomorrow.

I'm a new owner of a MakerGear M2 that I set up about two weeks ago. Things are going pretty well. Obviously I've been trying numerous settings during this steep learning curve. Today however, the printer started making a noise that's difficult to describe. What I am hearing is something that sounds...