Printer: Ender 3 with a metal extruder - PLA
But after I tweaked temp, flow, and speed for multiple test prints, the issues disappeared - even if the settings were returned to default.
Sadly, after a couple good prints, it started having issues again.
Why is my printer having these issues?
EDIT: The cause was that I didn't install the spring in the tension arm correctly-it was not compressed enough to deliver the necessary force to grip the filament.
Since my printer was working fine until recently, it leads me to believe that the spring must have weakened. So new question: is that the case? And do you recommend I unscrew the arm and release the spring when I'm not using the printer to improve lifetime?