Post by Axiom Tool Group on Apr 8, 2019 14:16:20 GMT -5
Andy, is this a new problem?
With the machine being about 1.5years old, we'd imagine that something may have loosened a bit to allow for some very small amount of play....such as the retaining nut found below the stepper motor and coupling for the Z axis.
The coupling itself could be worn, or the ball nut bearings in need of service.
Have you greased those bearings recently? This should be done approx. every 500 hours of machine use...in addition to the regular daily topical lubrication.