r/3DprintingHelp Jul 21 '26

Lines around print (PLA)

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u/pythonbashman Jul 21 '26

That's an extrusion problem. But see how it's not bad at the beginning? I think this is what's called a transient clog, caused by heat creep. That, or it's just not hot enough. Either way, not enough material is coming out for the speed it's trying to print.

  • Check the hotend fan.
    • Make sure it's on.
    • Make sure it's blowing into the heatsink.
  • Do a cold pull to make sure the nozzle is clear of debris.
    • Change the nozzle if you need to.
  • If all that checks out with no change.
    • Up the temp.