Working on a pair of identical new builds, and both machines are exhibiting the same behavior.
When I run a bed mesh using beacon in scan mode, I am getting a sort of rumbling noise when the toolhead movement changes direction.
This only occurs during the bed_mesh_calibrate scans. Noise does not occur duing any other processes ive seen (homing, z_tilt, actual printing, nozzle scrub macro, etc).
I have tested reversing the scan direction, so that it scans along Y, and the noise follows the change (ie, quiet during Y move, then noise when it jogs on X).
Machine specs:
180mm Salad Fork
LDO Leviathan controller
Nitehawk-36
Beacon
Is this mechanical? seems unlikely because it is identical between the two machines.
Are the A/B motors stalling? I am running TMC_Autotune and adjusting from silent to performance and back hasnt made any noticeable difference in this behavior.