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3D Printing
3D Printing Forum Ender 3 extruder randomly running backwards at the beginning of print
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  • Replies 12 replies
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  • filament spool
  • ender3
  • 3D Printing
Related

Ender 3 extruder randomly running backwards at the beginning of print

nowhere2194
nowhere2194 over 2 years ago

I have an ender 3 that sometimes will just randomly pull all the filament out at the beginning of the print. I have been just stopping the print, resetting the filament, and restarted the print and it works fine. what could be going wrong? any ideas

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  • Fred27
    Fred27 over 2 years ago +2
    What do you mean by "randomly pull all the filament out"? It's normal for some to ooze out as the nozzle heats up. The printer will then "wipe its nose" at the side of the build platform before starting…
  • dougw
    dougw over 2 years ago +2
    Some printers have a "change filament" command that ejects the filament. It sounds like this command is somehow being executed. Is there a menu option for this command?
  • robogary
    robogary over 2 years ago +1
    Not sure root cause, but I'd recommend doing basic maintenance to see if that fixes the problem - teardown the extruder, meticulously clean out all the filament pathways including the nozzle (maybe even…
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  • Fred27
    Fred27 over 2 years ago

    What do you mean by "randomly pull all the filament out"? It's normal for some to ooze out as the nozzle heats up. The printer will then "wipe its nose" at the side of the build platform before starting the print. I doubt you mean that though. Maybe a video would help.

    To be honest though, 3D printing seems to always involve something randomly going wrong. If that happens occasionally then you're probably doing it right. Wink

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  • Fred27
    Fred27 over 2 years ago

    What do you mean by "randomly pull all the filament out"? It's normal for some to ooze out as the nozzle heats up. The printer will then "wipe its nose" at the side of the build platform before starting the print. I doubt you mean that though. Maybe a video would help.

    To be honest though, 3D printing seems to always involve something randomly going wrong. If that happens occasionally then you're probably doing it right. Wink

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  • nowhere2194
    nowhere2194 over 2 years ago in reply to Fred27

    The extruder will run in opposite direction pulling the filament from the hot end.

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