Convert CATPART to 3DM

Understanding CATPART and 3DM file formats

CATPART files are native part files created by CATIA, a leading CAD software developed by Dassault Systèmes. These files store 3D part models, including geometry, features, and design parameters. 3DM files, on the other hand, are the native format for Rhinoceros 3D (Rhino), a popular 3D modeling application. 3DM files are based on the openNURBS initiative and are widely used for exchanging 3D geometry between different CAD applications.

Why convert CATPART to 3DM?

Converting CATPART to 3DM is often necessary when collaborating between teams using CATIA and Rhino, or when leveraging Rhino's advanced modeling and rendering capabilities on CATIA-designed parts.

How to convert CATPART to 3DM

Direct conversion between CATPART and 3DM is not natively supported in most CAD software. However, you can use specialized software or intermediate formats to achieve this conversion.

Recommended software for conversion

• Autodesk Fusion 360: Import the CATPART file, then export as STEP or IGES, which can be opened in Rhino and saved as 3DM.
• Okino PolyTrans: A professional CAD conversion tool that supports both CATPART and 3DM formats.
• Datakit CrossManager: A dedicated file converter that can directly convert CATPART to 3DM if you have the appropriate modules.

Step-by-step conversion using Fusion 360 and Rhino

1. Open Fusion 360 and import your CATPART file via File → Open.
2. Export the model as a STEP file using File → Export → STEP.
3. Open Rhinoceros 3D and import the STEP file via File → Import.
4. Save the imported model as a 3DM file using File → Save As.

Tips for successful conversion

• Check for geometry errors after import/export, as some features may not translate perfectly.
• Use the latest versions of both software for best compatibility.
• Consider using professional converters like Datakit CrossManager for direct conversion if available.