mceep

Thanks AaronAlai, I'll try Sander. I did (after a huge wait) get a reply from support but I'm still waiting to hear back on a replacement part. Ultimaker support appears to respond to queries slightly quicker than a brick wearing earmuffs.

Thanks everyone for the feedback! I saw the first few replies and tried the heatgun/hairdrier technique this morning. My progress was... mixed. The hairdryer didn't really work at all, it just warmed up the plastic. So I tried a craft heat gun set to low and that was much more successful, the plastic went soft enough to remove and I got about 90% of it out! However, there was a slight downside, while warming the plastic I managed to melt the cooling fan on the back of the extruder head which is now not working. *facepalm* My next plan is to follow

Back up a second, how exactly do I clear all the plastic that is now decorating the internals of the print head (see photo 2)

So i've been having some extrusion problems where I was getting slightly uneven printing (something other forum posts have covered). But after spending many hours with it yesterday it appeared solved so I set up an overnight print of a model that I've done quite a few times before (using the default 'High' quality setting in Cura). Attached are the pictures of the print bed and the print head when I came in to this morning. Anyone got any suggestions what I do next. I've not ruled out sobbing.