Jump to content
UltiMaker Community of 3D Printing Experts

Weird layer shifting


Recommended Posts

Posted (edited) · Weird layer shifting

I have weird layer shifting that always happens in the same direction the same amount each layer, it looks like a software issue because it's way too consistent.


I have a sketchy looking printer I made on my own, I just have gotten it up and running with marlin. I printed over usb with Cura, the preview did not show this.


Any tips?


Edited by Emrea
  • Link to post
    Share on other sites

    Posted · Weird layer shifting

    It's the printer, not the gcode.  There is some fast/violent move that is identical on each layer and you are losing one full step on the stepper.  It's the same on every layer because it's exactly one full step and because the slicer is doing the same fast move on each layer.


    It's probably the stepper.  If it was pulleys then it wouldn't be so consistent.


    Either adjust the current or more likely, lower the acceleration and jerk.  Try cutting them both in half.  You'll have to play with these values.  Hopefully you have a firmware that lets you change this easily for example with a gcode and you can do many moves with higher and higher accelerations to see where it slips and then maybe cut that value in half.  Same with jerk.


    I'd use pronterface or similar so I can command the fastest possible moves and just do simple, long moves back and forth adjusting max speed, accel, jerk settings.


    Anyway also it's possible a pulley slipped.


    If you have pulleys and belts then tighten the set screws more.  You need to tighten the hell out of those set screws - your allen wrench should be twisting a little.  If you have a tiny L shaped wrench then it should hurt your fingers.  Usually the pulley on the stepper.


    Pay attention to if it was slipping in X or Y as that's the only axis you have to tighten.


    It's also possible the belts are so loose they slipped a tooth.




  • Link to post
    Share on other sites

    Posted · Weird layer shifting

    The nice thing about printrun/pronterface is that you can issue gcodes manually and adjust these values and issue G commands to move the axes.  I think M500 can save the acceleration values permanently (so you don't lose them on power cycle).  You should also keep good notes and maybe edit Configuration.h so that if you ever do a "reset to factory settings" you don't lose your hard work.

  • 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
        • 31 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
        • 23 replies
    • Create New...