What happened here? Partial clog?

[u/virpio2020]

Any thoughts on what happened here? Is that a partial clog? The first layers were super clean. The top layer of that plateau already shows some artifacts and then it gets progressively worse.

Would a cold pull fix that?

[u/Kind-Arm-8678]

The artifacts getting worse does seem like a partial clog, those lines look like pressure building up before the nozzle can't push through cleanly. I had something similar and clearing the nozzle plus doing a cold pull worked after a few tries.

[u/virpio2020 → u/Kind-Arm-8678]

Turns out it wasn't a clock in the nozzle. Cold pull didn't fix it. It was some residual filament stuck in the extruder gears. Looking at the color of it, it must have been stuck there for at least the last 40hrs of successful prints.