8 Advanced Calibration
Additional calibration tools and settings for advanced users are available, but they are
entirely optional and some of them are even experimental.
8.1 Steel sheet profiles
The Smooth PEI sheet, Satin powder coated sheet and the Textured PEI powder coated
sheet all have their advantages, as explained in
6.3.2 Preparation of spring steel sheet
. It’s
possible you own all of them and wish to switch between them based on your current needs.
However, due to a different thickness of the sheets, each sheet requires individual First layer
calibration. To avoid re-calibrating every time you switch the sheet, you can save the settings
for up to 8 sheets. You can then easily switch between the sheets (profiles) and the printer
will load the stored values.
To set up an individual sheet profile, head to the
LCD Menu - Settings - HW setup - Steel
Sheets
. For each sheet, the following settings are available:
●
Select
- confirms the selection of the sheet, which will then become the default
●
First layer calibration
- starts the First Layer Calibration process for the given profile
●
Rename
- enables you to change the name, up to seven characters
●
Reset
- sets the values back to the factory defaults
As soon as two or more profiles are configured (by the
), you will be
able to quick-toggle between them directly from the main menu.
8.2 Nozzle diameter setup
By default, all Original Prusa i3 printers are shipped with the 0.4mm nozzle. In case you
change the nozzle, you can set the correct diameter in
LCD Menu - Settings - HW setup -
Nozzle d.
The printer will then compare the stored value of the nozzle diameter with
parameters in the G-code. If there is a mismatch, you will be informed to prevent a print
failure.
8.3 PID tuning for Hotend (Optional)
If you are experiencing wide swings in temperatures of your nozzle (e.g +/- 5
C°),
you shall
do PID tuning on your printer.
If you are experiencing major temperature fluctuations higher
than that, first check that your hotend thermistor is properly seated in the heater block and
plugged into your EINSY board.
You can find this feature in
LCD Menu - Calibration - PID calibration
. In this menu, you
have the option to choose the temperature for which the PID will be run. Set the temperature
with which you print the most as it will tune itself ideally for the selected temperature.
However, the general stability will improve for all temperatures (PLA/ABS/PETG). After that,
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