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thanks for the infos.
I think, that the nozzle is never clogged. It seems that the feeder has a problem.
I cleaned that gear wheel twice, but it is not really dirty...
Then I start printing and after few minutes he goes like "tok tok tok tok tok tok...." and doesnt feed any material anymore...
Even if I want to unload material he doesnt get it out, always this "tok tok tok..." noise...
Perhaps the motor is broken? Or sth else?