I have been using my Bambu A1 mini for the last several months without major issue, but suddenly I can’t get anything to print. Even a benchy detaches before finishing.

I have scrubbed the plate with a fresh sponge, soap and water. I kept my filament in a dehydrator for a couple of days, then immediately tried to print.

There is a local problem, where an illegal landfill caught fire, and it can’t be put out. I smell burning rubber all the time. Could that be the cause of the print failure? What else can I do?

  • maxwells_daemon@lemmy.worldEnglish
    7·
    7 hours ago

    Any videos of when the print fails? Is it all prints or just the Benchy? Does it always fail at the same height?

    From the available info, I’d guess it got knocked off the bed because the nozzle hit the curled overhang, which indicates the first layer is too high, decreasing adhesion, and the fan is not blowing enough, so the overhangs don’t cool enough, which allows them to curl upwards and get in the way of the nozzle.

    More info = better diagnosis.

    • mineralfellow@lemmy.worldOPEnglish
      1·
      7 hours ago

      Everything is failing. There are definitely collisions happening.

      How do you reduce the thickness of the first layer?

      • maxwells_daemon@lemmy.worldEnglish
        6·
        7 hours ago

        Lower the Z offset. Not by too much, or it’ll scratch the bed.

        “Everything is failing” is not useful info at all. Post a video of the failure happening if you don’t know how to describe it.

        • stangel@lemmy.worldEnglish
          51·
          7 hours ago

          Maxwell asked if it was all prints failing it just the benchy. OP replied “everything is failing”.

        • mineralfellow@lemmy.worldOPEnglish
          2·
          6 hours ago

          Ok, I am having trouble uploading the video. Anyway, all of the prints will be fine up to a point, then detach. The nozzle is colliding with the models. In some cases, I can see the model being pushed down on one side or other by the nozzle before it detaches.

          • maxwells_daemon@lemmy.worldEnglish
            2·
            5 hours ago

            Yeah, if the nozzle is hitting the part, then it’s very likely a cooling issue. If an steep overhang isn’t cooled properly, it’ll curl upwards.

            Either you’re printing too hot, or the fan is too slow or failing. For PLA, you can leave the fan at 100% after the first or second layer, and print between 195 and 205°C. Printing too fast also means the fan may struggle with the amount of hot plastic.

            Can you paste your slicer settings?