Convert SLDASM to 3DM

Understanding sldasm and 3dm file formats

SLDASM is the file extension for SolidWorks Assembly files, which store 3D assembly data, references to part files, and assembly structure. These files are widely used in mechanical design and engineering for creating complex assemblies from individual part files.

3DM is the native file format for Rhinoceros (Rhino), a popular 3D modeling software. The 3DM format is based on the openNURBS initiative and is used for storing 3D geometry, including NURBS curves, surfaces, and meshes, making it ideal for CAD, CAM, and 3D printing workflows.

How to convert sldasm to 3dm

Converting an SLDASM file to a 3DM file allows you to use SolidWorks assemblies in Rhino for further modeling, rendering, or fabrication. Since these formats are native to different software, a direct conversion requires specialized tools.

Recommended software for conversion

• Rhinoceros (Rhino): Rhino can import SLDASM files (with some limitations) if you have the appropriate plugins or if the assembly is saved as a neutral format like STEP or IGES from SolidWorks first. Once imported, you can save the file as 3DM using File → Save As.
• SolidWorks: Export your SLDASM assembly to a neutral format such as STEP (*.step, *.stp) or IGES (*.igs, *.iges) using File → Save As. Then, open the exported file in Rhino and save it as 3DM.
• Online converters: Some online services like CAD Exchanger or AnyConv support SLDASM to 3DM conversion, but results may vary and assembly structure may not be fully preserved.

Step-by-step conversion process

1. Open your SLDASM file in SolidWorks.
2. Go to File → Save As and choose STEP (*.step, *.stp) or IGES (*.igs, *.iges) as the file type.
3. Save the exported file to your computer.
4. Open Rhino and use File → Open to import the STEP or IGES file.
5. Once the model is loaded, go to File → Save As and select 3DM as the file format.

Tips for successful conversion

• Check for missing references in your SLDASM file before exporting.
• Assemblies with complex constraints may require manual adjustments after import.
• Always verify geometry integrity in Rhino after conversion.

Conclusion

Converting SLDASM to 3DM is best achieved by exporting to a neutral format from SolidWorks and then importing into Rhino. This workflow ensures the highest compatibility and preserves most of the assembly's geometry and structure.