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b) Fine adjustment of the filament infeed
This chapter describes how to adjust the filament feed precisely, e.g. to compensate for the tolerance of the feed knurl. In our example, the left
filament feed is calibrated.
Preparation
• If it has not been done yet, install the software Repetier-Host incl. the drivers and connect the printer to the computer (see chapter "12. Soft
-
ware and firmware Installation").
• If applicable, enter the COM port and connect the software to the printer (see chapter "18. a) Connection of the connected printer"). The
symbol at the upper left must be green and it must say "
Disconnect
" below.
• When the printer is connected, switch to "
Manual Control
" in the
software.
The printer must only be controlled via the software throughout this
process.
• Move all axis to the home position. For this, click the house icon in
the middle.
• Use the arrows X/Y and Z to move the printing plate and the ex
-
truder carriage roughly to the position indicated in the large red
box. This is about making the extruder accessible easily and ena-
bling the filament to exit the extruder well.
• Heat up the extruder 1 (left extruder/extruder 0 in the firmware) to
printing temperature and insert a filament. Then let it extrude a little
filament. In our example, we use conventional PLA and therefore
have chosen a temperature of 230 °C.
Measuring the feed
• Mark 100 mm or 10 cm precisely at the inserted fila
-
ment, starting at the upper edge of the ball bearing.
• Always apply the measure on the inside as shown
in the figure. This prevents the ball bearing holder
from being pushed down. When you measure the
right side later, apply your measure to the left side
of the filament.
