6.3.7 Mesh bed leveling
Mesh bed leveling can be found in
LCD Menu - Calibration
. This procedure is performed
before every print. It is also the same procedure that happens in the second round of XYZ
calibration.
The SuperPINDA probe goes through a number of points in a grid pattern spread across the
sheet plate (whether it is a powder coated or smooth PEI does not matter) and measures the
distance to the sheet. These points are interpolated and used to create a virtual mesh of the
bed. During printing, if the bed is slightly warped, the probe will still precisely follow the
surface according to its measured mesh.
Mesh bed leveling settings
The default grid density is
3x3 (9 points)
. However, if you still experience an uneven first
layer adhesion, you can increase the density in
Settings - Mesh bed leveling - Mesh
to
7x7
. Additionally, changing the
Z-probe nr.
you can change how many times will each point
be probed. We suggest either 3 or 5 measurements since the final value is calculated as an
average value. Changing these settings affects how long will the Mesh bed leveling
procedure takes to complete. However, even the slowest variant finishes in under a minute.
Finally, with 7x7 Mesh bed leveling, you can choose whether or not to use
Magnets
compensation
. The removable flexible sheet dampens the magnetic field significantly. Still,
11 of the 49 points are so close to magnets, that the reading can be off by as much as 80μm.
Magnet compensation ignores readings from these 11 points and calculates them from the
surrounding points. We suggest leaving this function
on
.
The StallGuard for the Z-axis is active during the mesh bed leveling. In case the nozzle
crashes into the bed before the SuperPINDA probe triggers, the calibration process is
interrupted and the user is asked to check the nozzle for any kind of debris.
Pict. 8 - Visualisation of mesh bed leveling
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