Jump to content

BB 0.4 clog issues

Recommended Posts

Posted (edited) · BB 0.4 clog issues

About a year ago, the company I work for got a Ultimaker 3 (E), but until about a month ago it was used and maintained by the IT guy. He recently left and I was put in charge of it. I didn't have any issues until I tried to do PVA with the BB 0.4 core. Right away, the print head started making a noise and nothing extruded. I've tried hot pulls and cold pulls for hours, but this clog doesn't seem to budge. Now, I got some cleaning filament to extrude from it,  but it bubbles and stays on the nozzle. We've only ever used Ultimaker filament, but I'm not sure what material the old IT guy used with the BB 0.4. I got a new core ordered, but this is really grinding my gears.


Thanks, Ranch





Edited by ranchprinter
  • Link to post
    Share on other sites

    Posted · BB 0.4 clog issues

    Manually set the temperature hotter, and try another hot and cold pull.

    you can manually set the temp on the touch screen somewhere.

    someone may have put a hotter melt temp

    material in it.  What other materials have you been working with?


    you can’t break it more.




    also try poking up the nozzle with a .3 mm drill or pin.

    have had to do this on wood filament before.

    aliexpress sell needles just for this job the right size.


  • Link to post
    Share on other sites

    Posted · BB 0.4 clog issues

    The BB core can also clog with PVA.

    It is not very unusual for a core to clog. The deposits in the pressure nozzle turn into carbon over time.

    (Ashes to ashes, dust to dust, filament to coal)


    An acupuncture needle helps well. But generally , manual heating helps well .

    If the blockage is higher than the pressure nozzle, a cleaning is difficult. Cold and hot blocked are then not feasible.

    (Then I also use a brass rod M3 to press material.)


    Although personally I would just buy a new core.

    I think.
    I give $100 and get two hours of free time and the problem solves itself. Or I work on it for one and two hours and afterwards I am not sure if it would have been better to buy a new one.

    I'm not trashing the old Cores for this. One day I'll work on it 🙂

  • Link to post
    Share on other sites

    Posted · BB 0.4 clog issues

    EDM wire- funny that is exactly what I use. not too hard it will scratch or break, but strong enough for the job.


    I did not mention it, as most people would have no idea what you are talking about!



    • Like 1
    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

      • UltiMaker Cura 5.3 stable released
        In this stable release, Cura 5.3 achieves yet another huge leap forward in 3D printing thanks to material interlocking! As well as introducing an expanded recommended print settings menu and lots of print quality improvements. Not to mention, a whole bunch of new printer profiles for non-UltiMaker printers!
          • Thanks
          • Like
        • 56 replies
      • Here it is. The new UltiMaker S7
        The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
        So what’s new?
        The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
        The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
        The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.

        The UltiMaker S7 also includes quality of life improvements:
        Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more  
        Curious to see the S7 in action?
        We’re hosting a free tech demo on February 7.
        It will be live and you can ask any questions to our CTO, Miguel Calvo.
        Register here for the Webinar
          • Like
        • 18 replies
      • UltiMaker Cura Alpha 🎄 Tree Support Spotlight 🎄
        Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
        We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.  
          • Like
        • 30 replies
    • Create New...