gigagrain

I am having problems with my new ultimaker. The extruder keeps getting jammed. It is VERY hard to push the filament thru the head. It is possible, just very hard. I have had about two hours successful print, but also 3 extruder jams. The first time I am not sure how I solved it. The second time I took the head apart and warmed it. The third time, I took it apart, warmed it, but I did not solve the problem! I have read the Jamming wiki: http://wiki.ultimaker.com/Jamming But it does not realy tell how to clean the head? Or why it get's jammed. This is how the print looks when the head is partly jammed: Does anyone know why it gets jammed? Or how to clean it? Thanks

I seemed to have solved it. I did it by putting the blue clip upside down. This liftes the white-bowden-tube-clamp alittle more. It seems to do the trick, at least it printed for two hours without poping up.

Thanks for the responses. MSURunner: I am pretty sure I put it together correct.Please see my hot end: https://skydrive.live.com/redir?resid=4A8877A8AF499313!1112&authkey=!ABgzrr18lZ9pTO4 The blue clip is not 100% like the one from the build guide, but it is close. This is the image in the build guide: http://www.flickr.com/photos/ultimaker/8643110880/ urban: Thanks for the thingiverse link, but it does not look like it works for a v2 hotend. I will try to print without retraction, or maybe add some tape on the bowden tube to make it thicker!

Hi I finished putting together my ultimaker two days ago. I managed to print 2 small pieces, without trouble, but now I am having trouble with the bowden-tube. It keeps jumping up from the extrusion head. I tried to push the bowden tube well in to the white Teflon tube (The white plastic that is in the peek). But after some printing the bowden tube jumps up a couple of centimeters, so the filament is visible. Is there a way to get it to sit better in the Teflon tube? Could the problem be that I am extruding too much? I am using default setting for everything. Thanks,