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Unanswered Issues with new filament

Discussion in 'Troubleshooting' started by 4sfaloth, Jul 19, 2020.

  1. 4sfaloth

    4sfaloth Member

    Sep 9, 2018
    Likes Received:

    I've recently bought a new filament spool from a local store and it's been a nightmare to print with. It's supposed to be regular PLA, but it's recommended printing temperatures are 200-220ºC which seems pretty high, which makes me suspect there's something different in its composition when compared to "real regular" PLA

    At any rate most of the prints I did with this filament suffer from under extrusion. Sometimes it just misses some layers and has some incomplete layers and then recovers, other times it starts under extruding and then stops extruding altogether.

    When cleaning up the filament is always pretty ground, but even when it has stopped extruding altogether it never has a complicated to remove clog. I was always able to easily remove the filament, get my cleaning filament through, clean up the bits in the drive's teeth and resume printing.

    I suppose I can just blame this on the filament's quality and move one, but I was wondering what else I can try to get this to print. I've been following what I've learned over the time and also some online resources (please check below) and so far I've tried:
    • Printing at the maximum recommended temperature for the filament (220ºC)
    • Reducing print speed to 30mm/s
    • I've "manually" checked the temperature over the heatbreak after it stopped extruding and, while it was warm, it was not burning hot so I don't think it's a heat creep issue
    I was thinking next of trying to disable retraction, and then if that fails trying to reduce print speed even further. Does this seem sensible? Anyone has a different suggestion?

    Thanks in advance

  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
    Staff Member

    Feb 21, 2013
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    Remember that the temperature range is not a rule, but more like ... "guidelines" :)

    So feel free to test above or blow that range if you need to.

    It would only be heat creep if it results in a clog.
    Geof likes this.

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