Kossel Model A User Manual Page 22
PRINTER OPERATION
This section details several processes that periodically will need to be performed to keep your printer running like new.
CHANGING FILAMENT
This section will guide you through the process of changing filament to allow you to replace fully consumed filament spools or
change colors between prints. To change the filament you must first completely remove the current filament and then install the
next filament spool.
CAUTION: The hotend will be heated to operating temperatures and can cause injury.
Removal
1.
Turn on the printer and preheat the hotend to the operating temperature (210 °C for PLA).
2.
Push up on the extruder lever and slightly push in on the filament until it comes out of the tip of the nozzle. The figure
below shows the extruder lever and direction to push.
3.
Gently pull the filament completely out of the Bowden Tube while continuing to push up on the extruder lever.
Installation
1.
Prep the end of the new filament by clipping it at a 45 degree angle, and straighten 2 to 4 inches of the clipped end,
which will be inserted into the extruder.
2.
Push up on the extruder lever and insert the filament into the extruder.
3.
Continue to feed the filament through the extruder and the Bowden Tube until it flushes out the old filament from the
nozzle.
4.
Release the extruder lever and you are now ready to get back to printing!
Extruder
Lever
Push Up
