The following information provides some insight in how the different file format structures work.
| Name | Extension | Polygon Import | Polygon Export | NURBS Import | NURBS Export |
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| Wire format (Autodesk) | .wire |
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| C4 format (Standard CAD)IGES subset format. | .c4x |
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| STEP format ISO standard industrial automation systems product data representation and exchange format. | .stp.step |
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| Autodesk Inventor format C4 format Translations require Autodesk Inventor or Autodesk Inventor Viewer to be installed. | .iv |
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| PTC Granite format (Windows Only)(PRO/ENGNINEER or any Granite based system) | .g.prt (Pro/E part file).asm (Pro/E assembly file) |
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| JAMAIS format (Standard CAD)Japan Automobile Association IGES subset. | .igs |
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| VDAIS format (Standard CAD)Verband des Automobilindustrie - IGES Subset. | .iges |
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| VDAFS format (Standard CAD)Verband des Automobilindustrie - FlachenSchnittstelle. | .vda |
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| DES format (Standard CAD)Data Exchange Standard. Contains polylines. Requires less space than equivalent IGES files. | .des |
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| DWG format (AutoDesk)Drawing Format. | .dwg |
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| DXF format (AutoDesk)Drawing Exchange Format. | .dxf |
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| SLC format (Solid Imaging)3D Systems Slice format. | .slc |
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| STL Format (Solid Imaging)3D Systems SLA file format. Used to send data to a stereo lithography machine. Binary and ASCII format. | .stl | |
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| CAI format for CATIA V4 files (CATIA)CATIA Alias Inter operate ability file format. | .cai |
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| CATIA V5 format | .CATPart.CATProduct |
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| OBJ format (Autodesk) | .obj |
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| Encapsulated Postscript format (Standard) | .eps |
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| VRML format Virtual Reality Modeling Language(3D Object Oriented Toolkit) |
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| Pro/ENGINEER Render file format | .slp |
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| IGES format (SolidDesigner)Initial Graphics Exchange. | .iges, .igs |
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| OpenInventor format (IRIX and Windows) | .iv |
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| Illustrator format | .ai |
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| NX par and assembly format | .prt |
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