Jump to content

Recommended Posts

Posted · Some brown crap just came out of my nozzle, should I be worried?

Here is a picture: You can see some of it on the outside skirt

rkUJCDE.jpg

I really have no idea what I should do. It has done this twice, and after each time I have done a few cold pulls and printed at 260c for 5min. Got my finger crossed that this is nothing. What do you guys think?

 

  • Link to post
    Share on other sites

    Posted · Some brown crap just came out of my nozzle, should I be worried?

    This is residue from "cooked" filament.

    Especially, if PLA based filament is left in the nozzle at much more than 220 it turns into black goo,

    the moisture evaporizes and the leftover is burned..

    Frequently switching between ABS and PLA is one cause for this problem, some PLA is left in the

    hot end, and when you ramp up to 260 for ABS the PLA residue is really burned.

    Did you print wood?

    260/85 pulls with ABS is what I recommend!

     

  • Link to post
    Share on other sites

    Posted · Some brown crap just came out of my nozzle, should I be worried?

    Taken out of context, this topic can make you do a double take :eek:

    If the ABS pulls don't work, you may have to take the hot end out and manually clean the inside. I've done that by heating up the element, pushing a small length of ABS directly into it, rotating it around a bit to try and break free the burned part, then pull it back out.

    If the filament snaps while doing this, leaving some inside, small needle nose pliers come in handy. I was kinda surprised when the filament turned into a taffy-like consistency. I thought it would turn more like pancake batter when heated up instead of that thick, gum-like goo. You can also try gently screwing a deck screw into the goo and pull. Don't want to go in so far to scar up the brass, so be careful. Maybe an ABS printed deck screw? Hmmmm... Would be thicker than just the filament, so wouldn't snap off as easy and wouldn't scratch the brass at all.

    Good luck!

     

  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • Help Us Improve Cura – Join the Ultimaker Research Program
        🚀 Help Shape the Future of Cura and Digital Factory – Join Our Power User Research Program!
        We’re looking for active users of Cura and Digital Factory — across professional and educational use cases — to help us improve the next generation of our tools.
        Our Power User Research Program kicks off with a quick 15-minute interview to learn about your setup and workflows. If selected, you’ll be invited into a small group of users who get early access to features and help us shape the future of 3D printing software.

        🧪 What to Expect:
        A short 15-minute kickoff interview to help us get to know you If selected, bi-monthly research sessions (15–30 minutes) where we’ll test features, review workflows, or gather feedback Occasional invites to try out early prototypes or vote on upcoming improvements
        🎁 What You’ll Get:
         
        Selected participants receive a free 1-year Studio or Classroom license Early access to new features and tools A direct voice in what we build next
        👉 Interested? Please fill out this quick form
        Your feedback helps us make Cura Cloud more powerful, more intuitive, and more aligned with how you actually print and manage your workflow.
        Thanks for being part of the community,

        — The Ultimaker Software Team
        • 0 replies
      • Cura 5.10 stable released!
        The full stable release of Cura 5.10 has arrived, and it brings support for the new Ultimaker S8, as well as new materials and profiles for previously supported UltiMaker printers. Additionally, you can now control your models in Cura using a 3D SpaceMouse and more!
          • Like
        • 18 replies
    ×
    ×
    • Create New...