Extruder Calibration - Hello Bee Prusa DIY 3D PRINTER KIT User Manual

EXTRUDER CALIBRATION

One very important step before you start printing is to ensure that the extruder is correctly aligned.
In some cases, extra paint is present in the metal mainframe that causes a misalignment after
assembling the extruder.
Because of this, you can have a extruder like the following example.
If this happens, just follow the next steps to correct this.
Use the four M3 plain washers, as referred to on page C7 of the Assembly Manual, to give a little
distance between the extruder heat sink and the metal frame.
This is represented in the picture.
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