Hello,
there is a big Problem with my Ultimaker-2.
Printing problems caused quite a lot of filament to
be stuck inside of the print head.
While the nozzle is
free and does print ok, during printing the material
inside the print head is heated up, causing it to
flow out of the head and mess up the print.
Advice on how to clean the print head
are very much appreciated.
All the best,
Christoph