thomas-bouldin

The problem was in the nozzle. I was able to clear it after a series of baking the nozzle for longer periods at slightly higher heat and trying to scrape it with a hot sewing needle. Now if I can just fix the sudden horrible calibration I'll be all set!

@Ian. I'm presuming the problem must be with my nossel since I can't push the filament through manually. @gr5. I managed to get the copper pipe out. I put both of them upside down (e.g. draining direction) in the oven at 200C for a bit over 10m; nothing visibly came out. I've attached a picture of my copper pipe; it seems pretty clean. I can't see through the nozzle, but I'm not sure I'm supposed to be able to.

I got my UM about a week ago and have always had some small extrusion rate problems (horizontal planes had trouble; I'd often end up with holes where the filament came out too thin or not at all). After only a handful of prints, it completely stopped extruding anything altogether. I'm assuming the extruder is jammed since I cannot force the PLA through manually. Three times I've tried following the instructions at http://wiki.ultimaker.com/Jamming. I cut out all the PLA that was in the boden tube in case it was deformed by the clamp being screwed too tight. I re-cut the boden tube tip to make sure it was more flush than what I originally bought. I took the peek out; it seems to be clean. The copper tube will not come apart from the nozzle; I tried gripping the nozzle with a wrench and the ring in on the copper tube with pliers, but the ring started to grind away before the tube would release. The only tool I had which could clear way obstructions within the copper pipe + nozzle pair was the hex wrench which came with the kit. I plunged that in there until I could no longer wipe away any excess goo. I turned up the temperature to 250C and nothing really comes out. After reassembling the extrusion head it is still jammed. I've rinsed & repeated the process three times to no avail. I'm getting quite frustrated to have spent so much time and money getting a printer that only lasts a few days before turning into a useless brick. What else should I be doing to fix this?