Quote Originally Posted by iD2 View Post
That was dampers , it come with stepper motor.Dampers
I've not read your thread bit if you have bought a complete machine and it came fitted with those dampers on then it suggests your drives are not the best and affected by resonance.?
Back in stone age it was common Hack to get around resonance crippling performance. It's not a Good thing.!!

If not and the drives are of decent quality with Mid mad resonance damping capabiltys then remove them because they will be affecting performance.