Purge The Extruder - Bfb 3D Touch Set Up And Operation Manual

j. Purge the extruder
move the bed half way down the machine,
Ensure filaments are loaded into the extruders, as defined in the
Make sure the springs on the extruder pressure bearings are compressed (as detailed in
to push the filament into the teeth of the drive shaft.
Proceed by purging one extruder at a time.
Heat the extruder (as shown in
Material Extrusion temperature (°C)
260
ABS
195
PLA
Once the target temperature has been achieved, turn the RPM up to 30.
Examine the movement of the filament at the pressure bearing. It should slowly be driven towards the nozzle. If not, ensure that the spring
pressure bearing is compressed sufficiently (
Observe the end of the nozzle. A thin bead of molten plastic should come out of the nozzle. Depending on how far the filament was loaded
into the extruder, this could take several minutes.
Allow material to purge for a few seconds before reducing the RPM to 0.
Repeat the purge process for each extruder.
Turn the machine off to allow the nozzles to cool.
As the extruders cool, clean the nozzles (see "Check the hot-end nozzles are clean").
Dispose of all waste filament from the nozzle.
3D Touch
Before purging the extruders, position the axes using the move command:
position the head in the middle of the machine, and
i. Extruder control ) to the maximum temperature defined below, depending on the material in the extruder:
c. Setting the extruder pressure bearings
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away from the nozzles. This prevents damage to the bed, and allows
purging to be inspected easily.
h. Load the extruders .
c. Setting the extruder pressure bearings
).
) enough