Strange "striping" of extruded filament

General LulzBot TAZ
1

After weeks of printing like a champ, my Taz2 has started exhibiting the following symptoms: regular “striping” of filament. It will start a bottom layer looking awesome, and then 4-5-6 or so stripes in, there will be a missing/clogged/terrible one, then good ones, then terrible…check these two photos to see what I mean:

the pattern continues up the print, to the point where my top layers are all gapped and patchy looking.

What I’ve done: re-re-re-leveled. Cleaned the extruder, cleaned the hobbed gear, re-adjusted the tension on the extruder.

At my wits end. What’s going on? It was producing beautiful prints, and one day just started this.

2

Try this Slic3r config and see how that affects things: https://www.lulzbot.com/support/taz-slic3r-profiles You may also want to lower the Z axis endstop adjustment screw slightly, perhaps around a half a turn clockwise to increase your first layer height.

3

Are you using the same gcode?

-Jeff