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stop printing after printed 3 models

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Hi all,

I am excited to get a new Ultimaker 2 back home. I printed 3 models so far and still doing the fine tune for the bottom layer. The bottom layer is very coarse now, but other layers are pretty good. (i am using z resolution of 0.02mm and bottom layer with 1mm)

Last night i met a problem. After i start a 40 min job, i went back to sleep, but this morning there is nothing on the plate, the LCD shows jobs done. Is the nozzle been blocked? Anyone have seen this problem before?




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Probably clogged nozzle. For example sometimes the filament gets stuck inside the head when you first load it (never once it starts extruding). It might get stuck on the edge of something in there.

Or dust. Or cat hair or other stuff.

Also if you let the nozzle sit at 240C or hotter for a long time without extruding the plastic in the nozzle tends to caramelize into brown gunk.

You might have to burn it all out but I recommend trying the atomic method first if it's not extruding anymore:



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