DirkH

Hello, thanks to everybody who tried to help me. Yes, heat break is the correct key word. The answer was quite simple with the benefit of hindsight. In the beginning I was impatient and switched the "preheat" to often on while trying out things. That was the first block. Then I didn't respect the need of a space between the hot-end and the cooling. The more I tried the firmer I screwed the hot-end against the cooling. So the filament became warm in a part with many retractions and blocked. Every attempt included this error because I wasn't aware of the importance of this gap.

I apologize for this confusion, it was a long night... It is the anycubic 3 d mega. If I should refer to another part of the forum, please let me know. Thanks Dirk

Hello Community, I have an ultimaker 3d mega since 3 months, printed a lot of technical parts and was quite happy with the printer. My problem seems to be a common one but I have tried all solutions I could find, and they didn't help: After about 10 minutes of printing, the filament is blocked within the hotend. For some minute fewer and fewer filament leaves the nozzle until nothing comes out. When I pull the filament out of the hotend, the distal 3 or 4 centimeters seem to be a little bit thicker than the normal filament. Twice I was not able to pull the filament out because it had