Jump to content
UltiMaker Community of 3D Printing Experts

Shifted Layers caused by ? Overheating vs Wire on UM2E+ vs Steppermotor vs Fan

Recommended Posts

Posted · Shifted Layers caused by ? Overheating vs Wire on UM2E+ vs Steppermotor vs Fan

Dear all,

Would anyone know what is the problem here?


I made 3 times a good 15 hr print on my UM2E+

The 4th time the print suddenly showed a shift on the Y-axis, almost at the end of the print

I marked the pulleys, the belts seem tight (so I did not change anything)

The 5th print, came out good. 

The 6th print showed again a shift on the Y-axis, the same way as the 4th print, also the same height

At the moment when it happened, I heard a sound, different from normal; a sound like what you hear when you connect with a usb to upgrade the firmware.

( I paused the print, and continued after a while, but the print continued to print at the wrong spot)


I checked the marks on 8 pulleys; they are at the same spot. All belts seem tight enough.

There are two pulleys connected with the two motor blocks I did not mark however.

The two motors can become quite hot.

The bottom heat (motherboard) seems okay; that was not really warm when it happened.


Would anybody know how I can solve this issue?

I know that there are more discussions about this, but some are different. I found this similar topic. Maybe somebody can have a look at my description of the problem?

Answers may also be written in Dutch. Pulleys and belts, stepper motor..., the English terminology is sometimes a bit confusing for me.


My conclusion so far;

-All belts and 8 pulleys seem okay

-Prints the same gcode sometimes good and sometimes with shifted layer, after quite some hours of print

-When this happens I hear a sound like a "Pòck!


I placed my question maybe in the wrong section, here is my original post;





  • Link to post
    Share on other sites

    Posted · Shifted Layers caused by ? Overheating vs Wire on UM2E+ vs Steppermotor vs Fan

    In the very beginning, on one of my UM2 printers, I had the Z-axis moving down a couple of times during long prints, due to overheating and temporarilty shutting down of the drivers. In mid-print it would fall down 5mm, and then continue printing as if nothing had happened. This was only on long prints, or very intensive use all day. I never had it on the X- or Y-axis, but I can imagine that it is possible too.


    In my case the solution was to reduce current through the stepper motors. Since then, it never happened again in all those years. If I remember well this was done on the printer, via the settings menu. I don't remember the exact values, maybe from 1200mA to 900mA, or something around this? Maybe try 20% off the current value? If you go too low, the stepper hasn't enough power to move the head anymore, and you get the same problem: skipped steps. Anyway, if you would try this, be sure to write down the original values.


    Another thing could be lack of lubrication of the rods and bearings. Or wrong oil: I once used "fine oil for sewing machines", but that quickly turned into a thick, sticky gum, almost glue, and it made head movements very hard: I could hear the printer struggling. Now I use hydraulic oil suitable for both industrial equipment (tractors, bulldozers, cranes) and fine test equipment (hydraulic lab testbenches). This oil does not dry out at all, and it collects and removes dust very well. I don't know if this is the best, but I just happened to have 100 liter surplus, so I gave it a try...


    With the machine off, you should be able to move the head manually without much resistance, and without dead or stuck points halfway.


    Concerning loose belts or pulleys: I think you should also check the pulleys from the motors, at the back, because they are loaded more. The other pulleys are doubled, so they share the load, but these aren't.


    Off-topic: how did you generate that mesh-like support structure? And how does the result turn out, in close-up?


    • Like 1
    Link to post
    Share on other sites

    Posted · Shifted Layers caused by ? Overheating vs Wire on UM2E+ vs Steppermotor vs Fan

    Good day Geert,


    Thank you for your written advises; very clear and helpful

    I will focus on all given points and give it a try, let you know when I am done 😃

    I will check áll the belts, other oil, and better ventilation to start with..


    Concerning your off-topic question; for printing the more organic meshes, like bones, skull and figurines I use Meshmixer to generate support. I do this since I started 3d printing and I am very content with it. The result in close up looks fine; I can just break away the support without a problem. (The figurine showed is a model I printed for the makers of the reconstruction, a Homo Erectus for Naturalis Leiden, made by Adrie and Alfons Kennis)


  • 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

      • 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
        • 10 replies
      • UltiMaker Cura 5.3.0-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
        • 17 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
        • 14 replies
    • Create New...