Pretty sure I’m having heat creep up the Bowden tube, as it’s getting jammed a few cm back from the hot end and then can’t push the filament any more. When I get it out there’s a little molten bulb at the filament.

In this fail, I think it jammed as usual and the extruder found a way to keep going.

I tried turning down the hot end from 215 to 200 and it’s still failing. My cooling fan is running at 100%.

This is the third time I’ve had this print fail at about this layer, around 1 hour into what will be a 26 hour print.

Any ideas?

  • IAmDotorg@lemmy.world
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    11 months ago

    That looks like Capricorn tubing. It’s got a 1.8mm, not 2mm, inner diameter.

    I used to regularly run into cheap filament that varied up close to 1.8mm in diameter that would get jammed in the tubing.

    When I did, tossing the roll was my only option.

    Capricorn is great for reducing filament backlash and printing flex, but requires very consistent filament.