tim.m30 wrote: ↑Dec 05, 2018 4:12 pmSounds unusual... what plastic is hitting?
There are a couple of "calibration steps" where the printer finds the movement extremes by stalling the stepper motors. This is safe and harmless but sounds bad. On power-up the extruder is moved to the top of Z-Axis and hits a few times. Then X and Y homes are found - but these are quieter because the belts buffer the impacts. Each "bump" lasts a couple seconds.
If this isn't what you are hearing,
1) Check that the PINDA probe LED is turning off as the extruder gets near the bed. If set too low, the printer can't know the nozzle is close to hitting.
2) Check X and Y movement: Raise the extruder by pressing the control button a few seconds to pop up the X Move option: put the extruder about half way up. Power off and see if the X and Y axis move freely by hand. Is there any catching, tight spots, or is the movement smooth and continuous?
Does this persist after a power cycle? Have you done a hard firmware reset?
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