Jump to content
Ultimaker Community of 3D Printing Experts

maximum stl filesize in Mb

Recommended Posts

Posted · maximum stl filesize in Mb


Can anyone tell me how large a stl file can be to load in Cura?

I used to work with Netfabb and try to switch to Cura (latest release 12.08). In netfabb my file of 96 Mb (car 1:18 main body) is sliced fast en read in without problem.

Cura doesn't load it in...

seems to me that retraction and nice first layer option is not for this...

Hope I am just doing something wrong, e.g. not loading the program as administrator...

thx for your reactions


  • Link to post
    Share on other sites
    Posted · maximum stl filesize in Mb

    96MB is huge, it might just take longer then you are expecting, as python is not super fast and can take a while to load large files. If you can, try saving the STL file as binary, this loads a lot faster then an ascii STL file.

  • Link to post
    Share on other sites
    Posted · maximum stl filesize in Mb

    Hi Daid,

    Thx for your reaction, it is Binary (:-) ) it is very complex in shape, it's a main car race-body 1:18 scale +- 180 mm long around 60 mm high.

    I am waiting but Cura is indicating it stopped working ( programma werkt niet ) on the windows menu bar.

    Thing is that it might be large for most users and thingyverse models but

    For me and the things I am trying to print, it more of a rule than exception.

    So maybe it's nice to see if future Cura's can be able to work with these file-sizes... if you want I can probably sent you a file to test with... Although it needs to be for your eyes only, as I don't want this to be freely spread... It's created for a client of mine...but if it helps you in developing a faster and even better Cura, it's no problem.

    thx try to read it in again.


  • Link to post
    Share on other sites
    Posted · maximum stl filesize in Mb

    If it goes to the "stopped working" state, it is most likely calculating the normals and sending the resulting 3D file to your 3D video card. Make sure you are using 12.08, as older versions where WAY slower at this point, and use too much memory.

    The model you has 1.920.000 faces. This is quite heavy on Cura. But it should load eventually if you wait long enough, but I think it will still be slow after that. Also, slicing will take a long time, so be warned on that.

  • Link to post
    Share on other sites
    Posted · maximum stl filesize in Mb

    Hey Daid,

    I think it slices it now, although in 3D view it shows the previous file, textwise it tells me that the right model is sliced.

    I will check probably the model is to large to create a 3D view on my 4 year old laptop... although it's a SLI card setup XPS dell.

    Keep you posted


  • Link to post
    Share on other sites
    Posted · maximum stl filesize in Mb

    Yes this has also been a problem for me with CURA, and is why I had to switch to NetFabb in the end. I have

    very large complex shapes and when loaded into CURA it shows you the shape for about 1 second then

    the display goes to garbage and shows a load of distorted triangle shapes, trying to slice results in a crash.

    The same models load straight into NetFabb with no problem at all.

    So CURA is, as far as I can see - not currently a great choice for dealing with large complex STLs. Perhaps there will

    be some progress on that soon with Ultimaker announcing that its going to shift to CURA officially....

  • 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

      • Talking additive | The 3D printing podcast
        Why should we be the only ones asking questions? Join us and ask Jabil all your questions on September 22nd 5pm CET
          • Like
        • 3 replies
      • Ultimaker masterclass: Optimizing your Ultimaker Cura workflow
        Save your seat for either broadcast on September 23.
        What will you learn?
        · Best practices for iterative print preparation and every lesson you should learn from each print
        · The right way to use per-object settings and when they are most useful
        · Easy-to-use resources for anyone who wants to develop their own printer definitions, plugins, or print profiles
        · How to optimize print profile settings and whether to “keep” or “discard” changes
        · When is the right time to export your drawing from CAD? (Based on Ultimaker Cura’s surprising power as 3D control software)
        · And a whole lot more tips and tricks!
        How can I join?
        This free masterclass will take place twice:
        1. 11am CEST (5pm SGT, 5am EDT)
        2. 5pm CEST (11am EDT, 8am PDT, 11pm SGT)
          • Like
        • 0 replies
      • Do you use 3D printing at work? Let us know
        It doesn't matter if you are using 1 Ultimaker or 10, there is inspiration in everything. We're looking for ...
        • 1 reply
    • Create New...