Jump to content
Ultimaker Community of 3D Printing Experts

Method for removing jammed PLA filament from bowden tube


Recommended Posts

Posted · Method for removing jammed PLA filament from bowden tube

I recently had a bad jam in my bowden tube. After several material changes, the wispy threads that sometimes get left behind bunched up and wrapped around the filament I was using. It was so bad it created a visible bulge in the tube:


Normal methods for getting a broken piece of filament out of the tube were of no use, given how badly stuck this was. Here is what worked for unsticking a really bad (PLA) jam:

1. Remove all the loose filament you can

2. Remove the bowden tube from the printer

3. Boil water

4. Hold the tube under the hot water at the location of the jam for 2-3 minutes

5. Quickly insert a clean, room temperature length of filament into the tube

6. Use the clean filament to tap the jammed filament repeatedly until it comes out of the tube

7. Allow the bowden tube to air dry, then replace on the printer


  • Link to post
    Share on other sites

    • 3 years later...
    Posted · Method for removing jammed PLA filament from bowden tube

    Thanks for this post, I just used this method to unclog my Bowden tube! Some Colorfabb Bronzefill filament had been crushed too much by the feeder so it was too wide to fit through the tube properly and got stuck. I couldn't hold the tube or push on the filament hard enough to see any progress after removing the tube from the printer. So I filled a skillet halfway with water and boiled it, then turned off the heat. Then I used two twist-ties to coil the clogged tube so it could be fully submerged as shown in the photo. After letting the tube spend about a minute underwater to reach temperature, pushing the filament out was effortless.


    • Like 1
    Link to post
    Share on other sites

    • 10 months later...
    Posted · Method for removing jammed PLA filament from bowden tube

    bumping the thread again, stumbled on it after a desperate Google search, lol. 

    I had some dissolvable support material split and get jammed in the Bowden. My typical techniques of using another piece of filament to push it out was futile. I resorted to soaking the tube in hot water overnight but that only dissolved the first few inches on either end. Still stuck. 

    Boiling water might do the trick, will report back. 

  • 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

      • New here? Get ahead with a free onboarding course
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Thanks
        • 14 replies
    • Create New...