I'm encountering issues with my Ender 3 printer. During prints, it consistently fails in the middle, displaying "retract 1.0" or similar messages( retract 2.0, 3.0 and sonon. Sometimes shows distance). Despite the extruder motor working, the filament wears thin and fails to move. I've attempted solutions like tightening the extruder, changing the metal extruder, ensuring a clean PTFE tube and nozzle, and calibrating the extruder.sometimes it seems like the filament becomes accumulated at the end of the ptfe tube. i have tried multiple times cleaning ptfe and nozzle. but nothing provided any fix, small prints gets printed fine, large prints fail.Seeking guidance for resolution.
The printer is not more than 6months old. initially i have adjusted the extrusion gear such that the unworn part of the gear touches the filament. then i have changed it while changing the metal extruder. I have also tightened the screw that increases the extruder tension. still the issue persists. I exact error message is "retract E5.0"