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How to convert .stl file to solid body in Solidworks

By Valter Escobar on 29 Dec 16:53 10 answers 35467 views 1 comment

I have a cover from a motorcycle in stl file and i need to make some modifications in the cover, but solidworks dont allow me to import the file as solid body because have to many faces. Anyone can help me in this problem. I will try to upload the file in my personal area. Thanks for the help


tampa_bomba_de_agua.stl, 28.7 MB

10 answers

  • Disan
    Disan over 4 years ago

    Done in over one minute, with Polygonica, from MachineWorks UK.
    I hope this
    is want you wanted.


    tampa_bomba_de_agua_18668.SLDPRT, 8.42 MB
  • val dimla jr
    val dimla jr about 4 years ago

    Launch the SolidWorks project you wish to use to import an .STL file. Click the "File" menu and choose "Open."

    Click "(*.stl)" from the "Files of type" drop-down menu, then click "Options." Three main options will display in the "Options" dialog box.
    Click "Graphics Body" if you wish to import the STL file as graphical data only. Click "OK" to confirm.

    Click "Solid Body" if you wish to import the STL file as a solid body. Click "OK" to confirm.

    Click "Surface Body" if you wish to import the STL file as surfaces. Click "OK" to confirm.

    Click the STL file you wish to import and click "Open." Allow for the import process to finish.

  • Charoenpon555
    Charoenpon555 over 4 years ago

    I have nerver try to reverse in solidwork before. I usually do in catia as show in picture.

  • Charoenpon555
    Charoenpon555 over 4 years ago

    There are a lot of method to model your file.
    First of all , you should think that what method you will use to model this part.
    For me I select loft-method to model main body of part.
    Then, I need curve section to loft, so I have to extract curve from cloud point.
    I start with import cloud point or stl file into catia by using digitized shape editor.
    Then I switch to Quick surface Reconstruction module and use plannar sections function to extract planar curve. I convert planar curve to be a curve by using curve from scan function. Now I get a curve for be a reference to sketch. Using sketch module to create skecth for loft. That's all.
    Good Luck.

  • christoffer dupont
    christoffer dupont over 3 years ago

    Disan: Will Polygonica be able to convert this file into a solid?


    Ohlers Musling - FEA.stl, 59.3 MB
  • David Knight
    David Knight over 2 years ago

    Cristoffer, sorry for the late reply but only just stumbled upon this.

    Yes, Polygonica can convert your file into a solid no problem, takes around 40 seconds.

    Let me know if you have any questions.

    - David

  • David Knight
    David Knight over 2 years ago

    Hi Arif

    Polygonica is an SDK, not an end-user tool. You can find more information at

    Also it should be noted that Polygonica only works on meshes, not on brep solid models. So it can close and repair mesh solids but not convert them into SolidWorks parametric models.


  • syuko
    syuko about 2 years ago

    Hi Disan

    Can Polygonica convert this foot model into solid body?


    16835_foot_v1_v4.stl, 4.94 MB

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