Jump to content
UltiMaker Community of 3D Printing Experts

One side of print always has the bad surface quality


Recommended Posts

Posted · One side of print always has the bad surface quality


I have problem with printed surface but only at one side of print. Printed model were always very good, but since month left side of printed models always has very bad quality. I checked  fan and they worked I also calibrated printer, but everything is okay and models still have poor left side quality







  • Link to post
    Share on other sites

    Posted · One side of print always has the bad surface quality

    You idea of checking the fans was excellent. 


    There are 3 fans in the print head.  I still suspect the left fan.  I've seen this kind of thing many times and when one side is better it's usually "not enough fan".


    Try to find a way to check the fan while it's printing instead of before you start.  It may be intermittent.  Maybe by using a small piece of paper to check airflow only on left side?


    Another possibility:

    Maybe the air temperature where you print has gone up?  Because of the location of the print cores and the fans one side usually prints better than the other.  But if this is a new problem maybe it is caused by slightly higher air temperatures or maybe you got some doors for your UM3.



  • Link to post
    Share on other sites

    Posted · One side of print always has the bad surface quality

    Thank you for your answer. The fans was my first thought but they work correctly. I also cheked temperature, speed and filament and still something was wrong so today I change the printcore. And that is solve of my problem. Probably old printcore was scorched in some area of nozzle. I try to clean it.

  • Link to post
    Share on other sites

    Posted · One side of print always has the bad surface quality

    That makes sense!  If the nozzle hole isn't round.  I will remember this for the next time someone has a similar problem.  🙂 


    Have you tried "cold pull"?  google it so you understand it - find an explanation with photos.  Then do it from the menu system on the UM3.  It usually takes a few tries to get a good cold pull.


    After a good cold pull the nozzle should be completely empty and you can see light through the nozzle tip.  Then try scraping the inside with a piece of metal while the nozzle is hot and do one more cold pull.

    • 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!
        • 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.  
          • Heart
        • 22 replies
    • Create New...