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This format suffers from the same proprietary limitations as DXF.Ī mesh-based format. Requires the installation of the Teigha File Converter utility. Since the 3D data inside a DXF file is encoded in a proprietary format, FreeCAD can only import/export 2D data to/from this format.Ī proprietary file format.

The native format of OpenCasCade, FreeCAD's geometry kernel.Īn open format maintained by Autodesk.

Some older applications don't support STEP but have IGES. Use it whenever possible.Īn older solid format, also very well supported. This is the most faithful import/export format available, since it supports solid geometry and NURBS. Here is a list of the most important ones with a short description of the available features: Format FreeCAD can import and export to many filetypes.