Tinkercad is part of Autodesk's 123D family of free apps.

    Sketchfab publishing isn't natively integrated yet, but Tinkercad can export formats that we support: STL and OBJ.

    We recommend OBJ + MTL.

    Go to Export ("Download for 3D Printing") in the top right menu.

    Tinkercad export 3d model

    Choose OBJ and download the zip file.

    Tinkercad download 3D model

    You can then upload this straight to Sketchfab!

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