Jump to content
UltiMaker Community of 3D Printing Experts

Curved walls

Recommended Posts

Posted · Curved walls


Hello together,


I have my UM2 since 2 weeks and printed so far without any problems. But now I have encountered this problem:



DSC 1579


DSC 1575

DSC 1573



The top side of this object should be printed straight, but somehow there is a curve in it. The bottom side was printed ok:


DSC 1578


I habe took a look at the glass bed and found that there was a little bit of warping:


DSC 1555DSC 1554

The warping is very small, so I can not imagine, that this is the reason for the curved wall. Could there be any other caus for this?


Filament: Silver-metallic PLA which comes with the UM2

Software: Simplify3D

Speed: 40 mm/s

Fans: 100 %

Heat bed: 70°C with glue stick

Nozzle temp: 220°C


  • Link to post
    Share on other sites

    Posted · Curved walls

    Try again eith a raft. Material compression it's more noticeable on large areas specially if the infill was high (more material more tension while cooling).

  • Link to post
    Share on other sites

    Posted · Curved walls

    70C is too hot for the bed. I know it's the default for most UM2's but 50C is plenty hot for PLA and there is no improvement at higher temps. This could be the problem if the part fell over when you were done and sat on the bed for a full 20 seconds at 70C. But I doubt that happened.

    I often think I've seen "every kind of print issue" but this is new to me - I've never printed out something quite this kind of shape. Does it have to be hollow inside? Could you put a vertical support wall touching that curved wall while it prints and cut it out later?

    You definitely also want to add brim on the basic tab under "support structure".

    Those are my two pieces of advice and will help some things but won't help this issue you asked about.

    Could it be fan related? The fan can really make prints better but you don't have any overhangs or bridging that I see so maybe put the fan at 30% and see if that makes any difference - just a guess here.


  • 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
        • 13 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...