Jump to content
UltiMaker Community of 3D Printing Experts

Please help! My large prints are lifting on corner.


Recommended Posts

Posted · Please help! My large prints are lifting on corner.

So I just got my UM2 today and doing some prints. The small one are fine but the larger prints (more contact with the bed) warp after 30 mins on the edges. I used Brim set up and have support on. My thought is the temperature different between the layers closer to the bed is much higher than the top layers to the top layers shrink which lift the corners up. I changed the bed temperature but have no idea what's the right temp to put? Any idea? Thank you so much!


  • Link to post
    Share on other sites

    Posted · Please help! My large prints are lifting on corner.

    good morning :-)

    first did you try using glue stick ?

    then how much brim did you use... for me when i need to create large flat parts.. i use a lot of brim.... it really does help.

    Also I think the standard temp for the heated bed is 70... bring that down to 50..

    Also for the first 1 hour... print slower ! and also for me this works atleast... cooling fans on the print head 100%

    Also make sure that your print bed is really setup perfectly... so when the print head moves around.. you get a nice squeezed a little pla flow... not just a string barely standing on the surface.. like a thick paint stroke.. then you should have a concrete base for your print !!

    hope that helps !

    Ian :-)


  • Link to post
    Share on other sites

    Posted · Please help! My large prints are lifting on corner.

    Ian has great advice - all those things help the part *stick* better. But there is another technique that instead reduces pulling forces.

    Another technique is to do all that but instead RAISE the bed temp a little and keep the fan off (although 70C is usually plenty). This second technique keeps the bottom 10mm of PLA *above* the glass temperature so that it is soft and mushy and the pulling/shrinking stesses deform it a little but not enough to pull it off the bed. This second technique usually requires the fan to be *off*. However only use this second technique for large parts - parts that take more than 15 seconds to print a layer.

    If the top layers of the part print less than 15 second you need to turn the fan back on at that point.

    A third technique creates a heated chamber. This isn't usually necessary.


  • Link to post
    Share on other sites

    Posted · Please help! My large prints are lifting on corner.

    If you do go the hotter bed and no fan option be aware that overhangs that are on the lower part of the part might come out, and I'll use a scientific term here, crap. Since the plastic is so soft it tends to sag down.


  • Link to post
    Share on other sites

    Posted · Please help! My large prints are lifting on corner.

    Ah! Thanks guys! I used ABS and it didnt work any time for a long flat print I knew about the head chamber technich from my previous experience with makerbots. I used to have to run 4 of them at the same time so I know the paint when you have to babysit them to make perfect prints. Im new to the heated bed and ABS plastic though. I changed back to PLA and it's all fine. They stick to the plate like hard glue. I still dont know how to work with ABS though. Maybe it's too cold where I live ( about 0 C out side). for now I will try to get my work done with PLA and mess around later with ABS. Thanks! I think Cura compare to Makerware is more stable when it com to slicing but the support structutrs arent the best. I'm having trouble with building parts with very limited contact with the bed to start with... Cura doesnt want to build supports for overhangs like "everywhere" like it says there. and the supports are a little bit hard to get off... Do you know what configurations are to have the best result?


  • 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
        • 21 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
        • 22 replies
    • Create New...