Jump to content
Ultimaker Community of 3D Printing Experts

A few questions about UM2 hot end parts


Recommended Posts

Posted (edited) · A few questions about UM2 hot end parts


I have a few questions after reading forums for a day and wanting further improve my Ultimaker experience.

1. UM2+ comes with TFM coupler and 9.4mm solid metal TFM spacer instead of spring. I wonder whether this combination would fit UM2 hot end (I use UM2GO). Is the distance between two hot end metal plates the same in UM2 and UM2+ series? Currently I am using glass-filled PTFE and a spring, would like an upgrade.

2. Every online Ultimaker reseller has a bowden tube for UM2 in stock. They all claim that it is not UM2GO compatible. Makes sense, I think the one for UM2GO should be shorter? Where do I find one that fits? Just cut the one meant for UM2 to size?

3. What's the practical difference between TFM couplers from Ultimaker and TFT couplers from 3dsolex? Also, if I were ever to purchase I2K upgrade from 3dsolex, would I need to shorten TFM/TFT coupler by the exact height of this I2K thingy?


Edited by Guest
  • Link to post
    Share on other sites

    Posted · A few questions about UM2 hot end parts

    3dsolex can sell you a 1mm shorter coupler.

    3dsolex and ultimaker I think they both use the same tfm.

    You can print a spacer 1mm shorter. I used one done on pla for a month. Plenty of time to print one on abs/carbon/xt/ngen

    Bowden, indeed you could just cut the area that goes to the feeder (easier to do a bad cut there) but the entrance has a bigger bore to allow easier filament load, I use an exacto knife to do that).

    Tfm couplers don't work well with the spring compresion it's better a spacer (printed or metal).

  • Link to post
    Share on other sites

    Posted · A few questions about UM2 hot end parts

    Thanks @neotko

    One more quick question. If I were to acquire new fan bracket from 2+ extrusion upgrade (horizontal fans instead of tilted), would it fit UM2 style printhead? My friend is buying the extrusion upgrade and he does not need new fan bracket, he uses a printed one.

    • Like 1
    Link to post
    Share on other sites

    Posted · A few questions about UM2 hot end parts

    No problem. The only dimensional difference if I'm right is that the new one sits a few mm lower... which is good to have a bit more clearance for the Olson block.

    • 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

      • The Ultimaker Showcase — October 14. What's new?
        Your dear friends at Ultimaker have some exciting news and insights for you!
        • 0 replies
      • 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.
          • Like
        • 8 replies
    • Create New...