Cleaning the nozzles
While using the Ultimaker 3 it can happen that the nozzle of a print core gets dirty by material that sticks to the nozzle. Although this will not damage your printer, it is recommended to try keeping the nozzle clean, in order to achieve the best print results.
To remove plastic from the outside of a nozzle, it is advised to take the following steps:
- Heat up the nozzle to 150 °C so that the plastic on the outside gets soft. You can do this by navigating to Material/Print core > Print core [x] > Set temperature and using the scroll wheel to change the temperature.
- When the nozzle is hot, carefully remove the material with tweezers.
Caution: Do not touch the nozzle and be careful while cleaning it as it will become hot.
Cleaning the feeders and bowden tubes
After many hours of printing, or when material has been ground down, there is a chance that there are small filament particles in the feeders. These can end up in the bowden tubes or print cores, so it is important to clean the feeders. This can be done by blowing the particles out of the feeders or by using a vacuum cleaner.
If the particles are already stuck in the bowden tubes, clean these as well. To do so, the bowden tubes have to be removed from the printer. You can find detailed instructions for cleaning the bowden tubes here.
Inside of the printer
Small pieces of material can gather inside the printer, including the initial extrusions. Remove these from the inside of the printer with a cloth or
Caution: Leaving larger objects on the bottom panel can lead to errors, as they prevent the build plate from homing properly.