Do not touch the nozzle or heatbed during this process until the process is fully finished as it
will reach high temperatures!
Once calibrated, your PINDA probe will be comparing its data readings under different
temperatures and also, additionally, it will include your Live Z data. This should help you to
have a stable Live Z.
Nevertheless, make sure that your 1st layer is done properly. More about that in
6.2.10.
Fine-tuning the first layer
8.3 View XYZ calibration details (Optional)
This feature can be found in
LCD Menu - Support - XYZ cal. Details
and provides access
to more detailed info about XYZ calibrating results. The 1st screen tells you the distance of
the “perfect” position of your two front calibration points. Ideally, all of these are positive and
at least 10 mm or more.
When you get your axes perpendicular or slightly skewed,
nothing needs to be tweaked because the printer will perform with the best accuracy
.
Pict. 23 - Distance of the front calibration point from the axis start.
Pressing the button will get you to the 2nd screen. This screen will identify how far you are
from the perfect perpendicularity. It is measuring the skew of your X/Y axis.
Up to 0.25
° =
Severe skew compensating
for offset of 1.1 mm on 250 mm length
Up to 0.12° =
Slight skew compensating
for offset of 0.5 mm on 250 mm length
Under 0.12° =
No need to compensate
, X/Y axes are perpendicular. Congratulations!
8.4 Linear Advance (Experimental)
Linear Advance is
temporary disabled in firmware 3.1.1
as it could sometimes
cause layer shifts, especially when printing with Octoprint. We will add this feature
back in the future versions, so keep your printer updated with the latest firmware from
www.prusa3d.com/drivers
.
Linear advance is a new technology which predicts the pressure build-up in the extruder
when printing at higher speeds. Firmware of the printer uses that prediction to decrease the
amount of filament extruded just before stopping and decelerating, which prevents blobs or
artifacts at the sharp corners.
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