CraftBot CB4 FLOW Series, User Manual

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12.3. AZ EXTRUDER ELTÖMŐDÉSÉNEK MEGAKADÁLYOZÁSA/JAVÍTÁSA
The number one inconvenience that you will run across when 3D printing is
clogging of the extruder. But we have good news for you! This problem can be easily
avoided by following a few simple rules of “3D printing etiquette”.
•
First, always wait until the extruder and heated build plate are fully heated
to their maximum intended print value before inserting the filament.
Inserting the filament at a lower temperature is just asking for a clog.
•
When unloading or changing the filament: always heat up the extruder all
the way first. Then ‟Extrude” for 5 seconds and then immediately press
“Reverse” aiding the filament retrieval by pulling a little bit on the filament
end coming out of the extruder with your fingers.
•
If the extruder is clogged clean out the passageway of the extruder. You
can use one of the small hex wrenches that came with the craftbot. To do
so. Heat up the extruder to 250 °C While the extruder is empty push
down any excess filament out by plunging the hex wrench down into the
passageway: Make sure to do adequately but not in a violent way which
would damage the machine, and always take precautions because the
extruder is very hot!
•
It is especially important to clean out as much old filament leftover
between using different filaments, as the different characteristics of the
filaments’ properties (even printing the same material in a different color)
can cause clogs from inconsistencies. For example: you must heat up to
250°C to clear out any extra ABS before using PLA.
Clogging is the most common problem in every 3D printer and cannot be
prevented 100%, but if you follow these simple steps you will prevent 95% of
occurrences. If you still cannot clear the passage with just this method, you may want
to move onto the next method by following these next steps to actually remove the
nozzle itself…