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 showcase | April 2022 | 4pm CEST | 10am EDT
        I'm excited because I've personally produced this showcase event, so if you are curious what else I'm up to nowadays, come check it out and say hi in the chat! It would mean a lot! 
          • Thanks
          • Like
        • 4 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
        • 12 replies
    • Create New...