The 3D printer starts to level automatically, the BLtouch probe
descends, and the nozzle head also descends. Until the probe touches the
first point of the platform, and the probe and nozzle start to rise. After
the first point, the nozzle-head would move above to the second point
and repeat this operation until all the 25 points on the platform are
tested.
After finishing the automatic leveling, user can click "Repeat" in the
previous operation interface, the printer starts printing, and the users can
evaluate the leveling effect of the platform based on the printing effect to
optimize the next step.