I’m using ELEGOO Rapid PETG Filament (1.75mm) with the stock HS PETG settings in orca-flashforge v1.3.0. It’s been printing fine for the past ~30 hours. However, during the last print (a 3x5 Gridfinity 42mm bin), extrusion suddenly stopped after completing the base and ~4mm of the walls.

Here’s what I’ve tried so far:

• Verified the filament roll had proper tension.
• Cut the filament at the top of the hot end and confirmed it moved freely in the feed tube.
• I checked the humidity of the filament, and it is 24%.
• Swapped in a brand-new roll of PETG.
• I set the nozzle temperature to 270°C and tried to load it, but very little came out.
• Used a 0.4mm cleaning needle to clear the nozzle—still no luck.
• Replaced the nozzle with a brand-new 0.4mm one. Loading produced a normal-looking purge.
• Leveled the bed and tried the print again. The purge line came out dotted and inconsistent, so I canceled the print.
• I removed the nozzle and pulled out the still-hot filament from the top. Using the cleaning needle, I confirmed that the nozzle was clear.

At this point, I’m stumped. Do you have any thoughts on what could be causing the issue or what to try next?