At the start of the Z calibration procedure the printer prompts you by a following message:
"Calibrating Z. Move Z carriage up to the end stoppers. Click when done.”
After that, the printer asks you to confirm this step:
"Are left and right Z carriages all up?"
Please make sure you really move the Z carriage up to the end stoppers until you hear a
rattling sound as the Z stepper motors skip steps. This procedure ensures, that 1) the X axis
is perfectly horizontal, 2) the print nozzle is in a known distance from the print bed. In case
the Z carriage did
not
touch the end stoppers, the printer could not possibly know the height
of the print nozzle above the print bed and it could therefore crash into the print bed during
the Z calibration procedure.
The Z calibration procedure also prompts you to
"Please clean the nozzle for calibration.
Click when done."
If this advice is not followed and there is a plastic debris on the print nozzle, then the debris
may touch the print bed or even push the print bed away from the PINDA probe, so the
PINDA probe will not trigger properly and the calibration will fail.
6.3.7 Mesh bed leveling
Mesh bed leveling can be found in
Calibration
menu. It is the same procedure which is
performed before every print. You can use it to check the P.I.N.D.A. probe alignment with
the calibration points however it is not necessary during the calibration process as Mesh bed
leveling is a part of Calibrate XYZ and Calibrate Z routines.
Before running this command clean the nozzle tip from any debris and run it while the
nozzle is cold. If the probe is misaligned and the nozzle is preheated, the nozzle can
make permanent impressions in the print surface.
Pict. 6 - The probe must be inside the circles (1st and 9th calibration point) to successfully
level the bed
.
20
Summary of Contents for Original Prusa i3 MK2S 1.75mm
Page 1: ......
Page 25: ...Pict 11 Probe response diagram Now you are done 25 ...
Page 61: ...Pict 35 Nozzle change 61 ...
