Jump to content

Tightening hot-end isolator


Recommended Posts

Posted (edited) · Tightening hot-end isolator

*never mind this, but I have another question (in my reply)


Until now, all the maintenance I've had to do on my Ultimaker 2+ has used the allen wrenches provided with the printer. Now though, I am trying to do the hot-end isolator tightening maintenance. The medium (2mm) wrench is too small, and the large (2.5 mm) is too large. I've also tried using Allen wrenches from a separate set I had (in those sizes) and the same thing happened. I've never done this maintenance before, so the hex connections should be as they were in the factory. Has anyone else had this problem? Do I need an in-between hex/Allen wrench (3/32 inch??? 2.25 mm???)? Why were Allen wrenches provided that don't work? Or do I need to replace the hot-end isolator?

Edited by ErikR
  • Link to post
    Share on other sites

    Posted · Tightening hot-end isolator

    Okay, never mind. I was putting the wrench in and trying to rotate the wrench itself instead of putting the wrench in and pushing it around to rotate the metal cylinder. I guess my next question is, how tight is it supposed to be? Turning one way (to the left) definitely loosened it, but turning the other way - while tightening it up some - doesn't get "tight", only slightly tighter than it was when loosened.

    • Thanks 1
    Link to post
    Share on other sites

    Posted · Tightening hot-end isolator

    Well do you have a spring above the white teflon part or do you have a fixed aluminum spacer?


    If the ring is too loose the olsson block is too low and it hits the fan shroud and you get lots of HEATER ERROR messages and failed prints when the fans come on.  So make sure you tighten the ring enough so that you can insert a piece of paper from the rear of the head between the block and the fan shroud - this lets you know you have a tiny gap.  As long as there is a tiny gap you are good to print.


    If you raise it really high the spring gets compressed more and more and puts more stress on the teflon part.  But it can take it for the most part but I like things as loose as possible such that the block is still not touching the fan shroud.  Which is probably as tight as you can go and then back off one full rotation.  


    If you have the aluminum spacer instead of the spring then you tighten until that part is no longer loose.

  • Link to post
    Share on other sites

    Posted · Tightening hot-end isolator

    Thanks, gr5. I have the aluminum spacer instead of the spring. The printer seems to be working fine. It was puzzling that it didn't tighten to a secure fit, but since it isn't "loose" and seems to be fine the way it is, I guess that's how it's supposed to be.

  • 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

      • 🎄✨ Thingiverse Tree Ornament Challenge! ✨🎄
        We've been running a Tree Ornament Challenge with a chance to win an UltiMaker S3 or colorFabb filament.
        Design a 3D printable tree ornament and join our festive challenge on Thingiverse. 🎁✨

        📆 Submission Deadline: December 22
        🏷️Tag your designs with Holidays2023

        Click here to join and check out the over 300 other amazing designs

        How to Enter
        Design an Ornament
        Create a 3D printable tree ornament that captures the magic of the winter season. Think snowflakes, sleighs, reindeer, cozy mittens, or anything that embodies the joy of the holidays. Upload to Thingiverse
        Share your masterpiece on Thingiverse and add the tag Holidays2023. Don't forget to include a captivating description and images that showcase your design from different angles. Submit by December 22
        All entries must be submitted by December 22nd to be eligible for consideration.
          Entering a new design
        Entering an existing design
        Winning designs should:
        Be original Creations
        Your designs should be original works, avoiding the use of others' intellectual property without permission. Include STL Files
        Each submission must include at least one STL file for 3D printing. Showcase a Completed Print
        Provide at least one photograph featuring a completed print of your design. Include Documentation
        Share the creative journey! Include documentation of your design process, giving us a peek behind the scenes. For example, show a screenshot of the model in your design program. Use the Tag Holidays2023.
        Use this tag to ensure your entry is counted in the Tree Ornament Challenge. Be submitted after October 1st, 2023
        Ensure your design was uploaded to Thingiverse after October 1st, 2023. Adhere to Submission Guidelines and Terms of Service
        Make sure your submission aligns with our guidelines and Thingiverse's Terms of Service.  
        Good luck 🎉
        • 1 reply
      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
      • Ultimaker Cura 5.6 stable released
        Cura now supports Method series printers!
        A year after the merger of Ultimaker and MakerBotQQ, we have unlocked the ability for users of our Method series printers to slice files using UltiMaker Cura. As of this release, users can find profiles for our Method and Method XL printers, as well as material profiles for ABS-R, ABS-CF, and RapidRinse. Meaning it’s now possible to use either Cura or the existing cloud-slicing software CloudPrint when printing with these printers or materials
        • 12 replies
    • Create New...