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Dabbling in Fusion 360

Discussion in '3D Modeling Projects' started by Rob Pulham, Jun 25, 2021.

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  1. Dec 21, 2023 #321
    paul_l

    paul_l Staff Member Administrator

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    I'd also add the .STL file is damn good at what it does, and is very versatile, I have created an eliptical wagon number plate in Fusion 360 at 11mm x 4mm, with lettering under 0.5mm in height. Exported as and .stl, then resized in the slicer software to print at 8 inches x 3 inches (18.5 times magnification) printing perfectly sharp.
    As Jim has noted editing is not the most straight forward.
    I have used MeshLab and Meshmixer to help repair files, not a great experience, but then again I try and avoid stl's until I get to the print stage.

    Paul
     
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  2. Dec 21, 2023 #322
    Jim Freight

    Jim Freight Full Member

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    Sometimes the IdeaMaker slicer repair tool has actually repaired a broken STL file, from there I export the repaired STL and re-import it into SU, really a last resort trying to use a 3rd party STL file for other than just printing out, rarely worth the hassle for what I print.

    Starting from an STL file is like reverse engineering software, possible in the early days before Windows and compilers, e.g. assembled code in the 8 bit days, but far too complex now, oh dear, now I'm drifting back to the ol' days, where's my slate and chalk, :facepalm:
     
    Last edited: Dec 21, 2023
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  3. Dec 21, 2023 #323
    paul_l

    paul_l Staff Member Administrator

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    Another blunt instrument approach is the slicers them selves.
    Importing the stl into the slicer program and hitting slice, it will normally have an option to repair any issues - mostly these are support or lack of support issues, but do spot holes etc. Repairing these and then exporting (Save as in Chitubox) will give a fixed (or more fixed than the original) file.

    Paul
     
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  4. Dec 21, 2023 #324
    Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    The first “repair” I did on the 4wheel NSR project coach was with the repair tool in Chitchubox. It worked as in it sealed it up but left it a different colour, which as Jim may have found from SU, is when a surface is revered. Something we don’t have to contend with when creating in 123d or Fusion.
     
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  5. Dec 22, 2023 #325
    Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    I’ve found an issue with Fusion..

    importing STL files makes them 10x over size. No idea why.
    Resizing in fusion then also moves its position in relation to the last as I cannot find a way that a model made up with STL files all collected together can be resized as they are all components..

    I think my only option is to go back to 123D and resize the whole model, resave each file for fusion, reimport as new version and recolour to keep everything in its correct place and orientation..
    ball ache but hey..

    if anyone finds another solution (or wants to have a go and see if the same happens) let me know..
     
  6. Dec 22, 2023 #326
    Jim Freight

    Jim Freight Full Member

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    Hi Andy, this may be due to units translation during the import / export process, make sure that the same units are applied throughout, I have been caught by this too, Jim :)
     
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  7. Dec 22, 2023 #327
    Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    As far as I can see, both are set to MM..
    good shout though..
    may need to check further in settings..
     
  8. Dec 22, 2023 #328
    Jim Freight

    Jim Freight Full Member

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    It does sounds as though mm and cm are involved, I read that STL files are dimensionless, which I think means that all the dimensions carried in the file are in 'relative units' so if the exporter writes the STL with one 'STL' unit equal to 1mm, then the importer has to do the reverse, i.e. translate 1 'STL' unit to 1mm.
    Jim :)
     
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  9. Dec 22, 2023 #329
    paul_l

    paul_l Staff Member Administrator

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    I'm with Jim on that, may mean the person who created the files may have cm defined somwhere.

    Paul
     
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  10. Dec 23, 2023 #330
    Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    Whilst I don’t disagree, it seems odd the original STL is to 7mm scale. import in to 123D and it checks out correct.
    Import the same files in to Fusion and they are over scale.

    infact, I tried some STL figures I have and they also do the same.

    would someone else check this with an STL and see if you have the same issue?
    If not, it does then point to one of my settings somewhere .. or that it’s IS a fusion 360 issue.
     
  11. Dec 23, 2023 #331
    Andy_Sollis

    Andy_Sollis Staff Member Moderator

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  12. Dec 23, 2023 #332
    Jim Freight

    Jim Freight Full Member

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    Last edited: Dec 23, 2023
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  13. Dec 23, 2023 #333
    Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    Sounds very much like the system we have at work.. just about to start out 4th year with SAAB.. but still keeps crashing, they blame our servers, till we had an independent assessor came in and say actually there are issues, but they wouldn’t cause the issues they are having :facepalm:
     
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  14. Jan 6, 2024 #334
    Andy_Sollis

    Andy_Sollis Staff Member Moderator

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    I’ve found an oddity in Fusion with the rendering..

    nsr coach file build no 61 v10.png
    for some reason it’s still picked up the photo environment background, which I turned off, through the windows! :giggle:

    hey ho! :facepalm:
     
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