Jump to content
UltiMaker Community of 3D Printing Experts

Fail to load on STL file I designed


Recommended Posts

Posted · Fail to load on STL file I designed

I have an STL file (a simple clevis pin) I created using FreeCAD. It loaded in Cura 4.6.1 and I was able to print it out. I made some adjustments in and exported the design again and now I get this error:

I opened the CURA.log file and find the following:

2020-07-06 21:56:30,774 - ERROR - [Thread-3] UM.Logger.logException [106]: Exception: Exception occurred while loading file D:/Clevis 6_25mm.stl
2020-07-06 21:56:30,779 - ERROR - [Thread-3] UM.Logger.logException [110]: Traceback (most recent call last):
2020-07-06 21:56:30,783 - ERROR - [Thread-3] UM.Logger.logException [110]:   File "X:\4.6-exe\build\inst\lib\python3.5\site-packages\UM\FileHandler\ReadFileJob.py", line 66, in run
2020-07-06 21:56:30,787 - ERROR - [Thread-3] UM.Logger.logException [110]:   File "X:\4.6-exe\build\inst\lib\python3.5\site-packages\UM\Mesh\MeshFileHandler.py", line 36, in readerRead
2020-07-06 21:56:30,791 - ERROR - [Thread-3] UM.Logger.logException [110]:   File "X:\4.6-exe\build\inst\lib\python3.5\site-packages\UM\Mesh\MeshReader.py", line 21, in read
2020-07-06 21:56:30,796 - ERROR - [Thread-3] UM.Logger.logException [110]:   File "C:\Program Files\Ultimaker Cura 4.6\plugins\FileHandlers\STLReader\STLReader.py", line 89, in _read
2020-07-06 21:56:30,800 - ERROR - [Thread-3] UM.Logger.logException [110]:     if numpy.amin(verts[:, 1]) == numpy.amax(verts[:, 1]):
2020-07-06 21:56:30,804 - ERROR - [Thread-3] UM.Logger.logException [110]:   File "numpy\core\fromnumeric.py", line 2442, in amin
2020-07-06 21:56:30,808 - ERROR - [Thread-3] UM.Logger.logException [110]:   File "numpy\core\fromnumeric.py", line 83, in _wrapreduction
2020-07-06 21:56:30,812 - ERROR - [Thread-3] UM.Logger.logException [110]: ValueError: zero-size array to reduction operation minimum which has no identity
2020-07-06 21:56:30,819 - DEBUG - [Thread-3] UM.FileHandler.ReadFileJob.run [71]: Loading file took 0.1 seconds


  • Link to post
    Share on other sites

    Posted · Fail to load on STL file I designed

    When you exported the file after your change the settings inCura, did you change the extension of the file for .STL? 


    The attached file does not look like a STL file. The file size is rather small.

  • Link to post
    Share on other sites

    Posted · Fail to load on STL file I designed

    It worked one time and then I adjusted the size in FreeCAD, which is where I drew it, and exported again.


  • 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
        • 24 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...