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Tr
oubleshooting
9.
Troubleshooting
A few printer-specific issues may occur when using your 3D printer. You can troubleshoot those yourself using
the following information.
9.1
Unclog a print head
Hot Pull
1.
Insert the filament (cleaning filament or PLA) into the heated (200 degrees Celsius) print head until you
feel some resistance.
2.
Hold the filament with pliers and gently apply pressure to the material for ±2 second so that it extrudes
from the print head or until it cannot be pushed any further, and directly pull the filament out with a quick,
firm pull. Use pliers to prevent injuries to your hands in case the material breaks.
3.
Cut off the tip of the filament that you have just pulled out.
Cold Pull
1.
Insert the filament (cleaning filament or PLA) into the heated (200 degrees Celsius) print head until you
feel some resistance.
2.
Hold the filament with pliers and gently apply pressure to extrude some material.
3.
Maintain pressure on the filament with the pliers while you switch off the heater of the print head to let
it cool down but maintain pressure at all times.
4.
When the print head reaches a 90 degrees Celsius pull out the filament with a firm pull.
5.
Take a look at the tip of the filament and see if it has a clean, cone-shaped tip like shown on the picture.
If the tip of the filament is not clean, go back to hot pull or cold pull to repeat the cleaning steps.