[4mm Thick "Wall" Print keeps failing]

That's just basic underextrusion.  I would try printing either a little slower or a little hotter.  I can see underextrusion in that wall and also underextrusion near the top and then it basically stops extruding at all and makes a stringy mess.

I'm not sure what is causing your underextrusion - there are so many possible causes but I'd start with speed and temp.  Especially temperature.  What temperature did you use?  I usually go for around 245C.  Once I clogged a nozzle because I printed too hot (254C that time - yes exactly 254) and I let it sit a little too long in the nozzle (a minute?) at that temp and it baked into a gummy mess.  I was able to get it out by heating the nozzle alone over a gas flame to about 200C and removing with a toothpick.

ABS has a much narrower temperature range than PLA.   PLA is pretty good from 180C to 240C.

Thank you! I will try that out. I thought it was weird for it to be only an under extrusion problem, since all the other parts worked fine (and it literally always fails at the same place). I was wondering wether it had something to do with the new algorithms for generating the gcode from Cura (since I have never run into such problems around a year ago, with a deprecated version of the software).

I have printed it at 240C (for this specific ABS the specs said from 230 to 245C). I will try raising it to 245C and lowering a bit the speed.

[4mm Thick "Wall" Print keeps failing]

Hello all,

I have made three consecutive tries printing the attached file with black ABS (2.85) in an Ultimaker 2 Extended, and I keep running with an error exactly at the same point of the print every time (you can check the failed print bellow too).

FILE / Cura configuration:

http://imgur.com/a/ggzOI

Failed print:

http://imgur.com/a/kHB13

I have printed the same file with PLA (of course with a few different configurations) and it worked fine.

Any suggestions?

Thanks!

Best,

Luiz.