How to Convert Navisworks File in AutoCAD?

Understanding Navisworks and Its File Formats

Navisworks is a powerful project review software mainly used in the construction and architecture industries. It brings together data from various sources, allowing for a comprehensive view of projects at different stages. When it comes to working with files in AutoCAD, understanding how to convert Navisworks files is crucial.

File Types Generated by Navisworks

Navisworks primarily uses specific file formats such as NWC (Navisworks Cache), NWD (Navisworks Design), DWF (Design Web Format), and FBX (Filmbox). These formats serve different purposes and have unique characteristics.

• NWC Files: These cache files store model geometry and are created when importing models from other software, such as Revit or AutoCAD.
• NWD Files: These are finalized versions intended for sharing and viewing without editing capabilities.
• DWF Files: This format allows effective communication of design information, enabling users to view complex drawings without requiring full design software.
• FBX Files: This format is commonly used for exchanging 3D geometry between applications.

Steps to Convert Navisworks Files for Use in AutoCAD

Converting to DWF for AutoCAD

1. Open Navisworks: Launch the Navisworks software and open the project you want to work with.
2. Access the Export Tool: Navigate to the Output tab in the ribbon interface.
3. Select Export to DWF: Click on the Export Scene panel, then select the 3D DWF/DWFx option.
4. Set File Preferences: In the dialog box, change the file name and select the desired location to save the output.
5. Complete the Export: Click Save, and the model will be exported to a DWF format. This file can now be used as an external reference in AutoCAD.

Importing DWF into AutoCAD

1. Open AutoCAD: Launch AutoCAD 2025 and create a new drawing.
2. Attach the DWF: Use the command line to type DWFATTACH and select the DWF file you exported from Navisworks.
3. Adjust Settings: Set any preferences regarding the placement and scale of the DWF reference.
4. Finalize Attachment: Click OK, and the DWF file will be attached to your AutoCAD drawing, allowing you to trace or extract information as needed.

Converting to FBX for AutoCAD

1. Export as FBX: In Navisworks, follow a similar procedure as above, but select the FBX format in the export options.
2. Import FBX into AutoCAD: Open AutoCAD 2025, use the command line to type IMPORT, and choose the FBX file.
3. Review Import Settings: Set any preferences such as geometry or arrangement during the import process.
4. Complete Import: Click Open, and you’ll have the model successfully imported as AutoCAD entities.

Limitations Regarding File Conversion

It’s essential to note that while Navisworks can export to formats that are compatible with AutoCAD, direct conversion from NWD or NWC to editable formats like DWG is not possible. NWD files serve as secured, non-editable formats to facilitate file sharing. For conversion or interfacing, always utilize the mentioned methods using DWF or FBX.

FAQs

Can I open NWD files directly in AutoCAD?
No, AutoCAD cannot open NWD files directly. They need to be exported to DWF or FBX first for import into AutoCAD.

What should I do if I encounter issues while importing DWF files into AutoCAD?
Check whether the DWF file is corrupted or incompatible. You may also need to update AutoCAD or ensure that you are using the correct commands for attaching DWF files.

Can I convert NWC files directly into DWG format?
NWC files cannot be converted directly to DWG. They must be first exported to either DWF or FBX formats to be importable into AutoCAD.