fefster

Did you realize that 3 of us mentioned the back fan? Including in that post you claimed was useless, lol! Yes, you are right. If you replied to my post like a decent person, I would have noticed it.

OH MY GOD! you guys are amazing, that was the problem! there was some plastic stuck in the little f***** at the back! thank you so much! hopefully now it will print like a beaut!

Neotko was right. I suspected this but it really seemed like it was all the way in. For future reference, the tube was damaged at the edge and it did not go inside the PTFE. I double checked how much the tube went in against my other ultimaker, and it was about a cm short! I will buy another bowden tube and see, but I really believe that was the problem. Thank you so much to all of you (all, but gr5 ) for your help. I will let you know if it works with the new bowden tube!

I also have two more ultimakers, and have been using them for a year and a half now, so I know them very well, have taken them apart multiple times, updated them with the new extrusion pack. The filament is not the problem. The bowden tube, maybe, but I don't understand what could possibly be wrong with it.

No, it doesnt.

Bit nervous, are we? Your reply is also pretty unhelpful, none of your answers are good or well thought out. You can just not reply the next time

My ultimaker 2 extended plus is not working properly and has been doing this for a while. Apologies for the amateur camera movements. I know it looks as if the yellow pin holding the bowden tube down is not placed correctly, but trust me it's just a coincidence, it does that no matter how well you place the pin. I have never seen this and I really cannot think of why it would do it anymore. It is an ultimaker extended plus and it starts off printing perfectly, but then a few minutes in it stops extruding and it makes a springy thingy with the filament. Any ideas? Here is the video: