Bad quality
Hallo everyone My XL5th after 5 months of perfect printing has this issue in 1 toolhead. I print with esun pla using the prusa slicer profile.
The prusa support says the nozzle is clogged.
I try these without fixing the problem
https://help.prusa3d.com/article/clogged-nozzle-core-one-core-one-l-xl-mk4-s-mk3-9-s_411823
Any suggestions?
Two possibilities:
A dirty fan - check the blades are clean and that there is no fine stringing wrapped around the hub.
Partial clog:
Let's try the extreme version of the technique on the page you linked above - go to the section 'Push new filament into the nozzle'
This time heat the nozzle to 10°C above the printing temperature of the hottest printing filament you use, take 50cm of dry PLA and push it into the nozzle - slowly at first then accelerating to as fast as it will go - finishing by immediately pulling the last of the filament out as fast as you can.
Cheerio,