Convert 3DM to RFA

Understanding 3DM and RFA file formats

3DM is the native file format for Rhinoceros 3D (Rhino), a popular 3D modeling software used in architecture, industrial design, and engineering. The 3DM format stores NURBS geometry, meshes, and related data, making it ideal for complex surface modeling.

RFA stands for Revit Family file, used by Autodesk Revit. RFA files contain parametric building components, such as doors, windows, or furniture, and are essential for Building Information Modeling (BIM) workflows.

How to convert 3DM to RFA

Direct conversion from 3DM to RFA is not natively supported by most software, as these formats serve different purposes and platforms. However, you can achieve this conversion through an intermediate format and some manual steps:

1. Open your 3DM file in Rhinoceros 3D.
2. Export the model to a format compatible with Revit, such as DWG or SAT (File → Export Selected → AutoCAD DWG/DXF or File → Export Selected → ACIS SAT).
3. Open Autodesk Revit and create a new family or open an existing one.
4. Import the exported file into Revit using Insert → Import CAD or Insert → Import SAT.
5. Adjust the imported geometry and save the family as an RFA file (File → Save As → Family).

Best software for 3DM to RFA conversion

• Rhinoceros 3D: Essential for exporting 3DM files to DWG or SAT.
• Autodesk Revit: Required for importing geometry and saving as RFA.
• Autodesk AutoCAD (optional): Can be used to refine DWG files before importing into Revit.

There are no fully automated online converters for 3DM to RFA due to the complexity and parametric nature of RFA files. Manual adjustment in Revit is usually necessary after import.

Tips for successful conversion

• Clean up your 3DM model before export to avoid unnecessary geometry.
• Use layers and naming conventions to organize components for easier editing in Revit.
• After import, use Revit's tools to assign materials and parameters to the geometry.