6.3.5.1 Y axis alignment (kit only)
For autocalibration to work properly, it is extremely important for the Y axis to be
perpendicular to the X axis. This can be easily checked by looking at the printer
from the top and visually aligning the Xaxis rods with lines on the heatbed. If the Y
axis is misaligned, you can easily adjust the position of the Y axis inside the frame
by loosening the
M10 nuts
on the Y axis and securing them at the newly adjusted position.
You can see how in the
Assembly Manual 7.PSU/Step 18
or in P.I.N.D.A. Probe
Misaligned topic at
help.prusa3d.com
.
Pic. 5 Xaxis rods must be visually aligned with lines on the heatbed.
If the Calibrate XYZ gives “
XYZ calibration compromised. Front calibration points not
reachable.
” error, you don’t necessarily need to adjust the M10 nuts and position of the axis
in the frame, but you can adjust the belt holder position. New version of the Ybeltholder
with a slot (shipped from August 8, 2016) allows to make a 1 mm adjustment to both the
front and the back. Loosen the Y belt holder screws, push the belt holder part towards the Y
motor and retighten the screws.
6.3.6 Calibrate Z
Calibrate Z
is located in
Calibration
menu. It should be performed after you move the
printer to different location. It saves the heights of all 9 calibration points in nonvolatile
memory. Stored information is used every time mesh bed levelling is called during a print.
When the measured values are vastly different to the stored value, print is canceled as it is a
good indicator something is wrong. Calibrate Z is a part of Calibrate XYZ routine so there’s
no need to run it after successful Calibrate XYZ.
It is a good practice to run this procedure every time you travel or printer is shipped as the
geometry might change slightly and cause an error.
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.”
Summary of Contents for Original Prusa i3 MK2
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