Filament stuck at the very begining of the nozzle

[eskeltron]

Hey, I have 2 Ender-3 V3 with the same problem. The filament get stuck at the very beginning of the nozzle after M600 or after I press the “Retract” button. I’m using PLA, nozzle temperature at 215°, it happens independently of the filament brand and color, so it happens almost all the time.

It generates a little ball and I have to disassemble the entire nozzle…

A couple of photos of the lovely little ball that it generates:

A bit of more information: Sometimes I leave the machine after the M600 code and the nozzle temperature is at 140° for a bit long, I found that the little ball is likely to be there when I leave the machine waiting for me to change the filament after the M600… but sometimes it just happens after the M600 or after hitting the “Retract” button

Any suggestion? I can’t believe that it is happening with the two machines that I have.

Thanks in advance!

[Andrewson]

Sounds like a pita! You could try a higher temperature . I print pla min at 225. Also there is a setting somewhere that determines the standby temp for the nozzle while you are changing filament. Try upping that to be more in line with your printing temp rather than at 140. Good luck.