AutoCAD

How to Open NWD File in AutoCAD LT?

by Wei Zhang
3 min read

Understanding NWD Files

NWD files are primarily associated with Autodesk Navisworks, serving as a format for sharing and viewing complex 3D models, particularly in the construction sector. Created to be non-editable, these files enable stakeholders to interact with project designs without altering them. The NWD format is often used for tasks such as clash detection and model analysis, making it essential for professionals using software like AutoCAD.

Limits of AutoCAD with NWD Files

Opening NWD files directly in AutoCAD is not feasible. AutoCAD does not support this file format for editing purposes due to its structure and intended usage as a viewer-only format. However, through alternative methods, it is possible to incorporate NWD files into your AutoCAD workflow.

Using Navisworks to Bridge the Gap

Navisworks can serve as a bridge between NWD files and AutoCAD. Follow these steps to facilitate the process:

  1. Install Navisworks: First, ensure you have Autodesk Navisworks installed on your system. The program allows you to interact with NWD files effectively.

  2. Open the NWD File: Launch Navisworks and use the file menu to open your desired NWD file. You can do this by navigating to File > Open and selecting the appropriate NWD file.

  3. Export as DWF: Once your NWD file is open, use the export feature to convert the file into a more compatible format. Go to File > Export > DWF (Design Web Format). This format can serve as a reference for your AutoCAD projects.

  4. Import the DWF into AutoCAD: Open AutoCAD 2025 and start a new drawing. Use the DWFATTACH command to attach the DWF file you exported from Navisworks. This will allow you to include the NWD content into your AutoCAD workspace.

  5. Use External References: If necessary, employ the External References palette to manage and control the visibility of the DWF file in AutoCAD. This provides a dynamic way to work with the imported data.

Creating NWD Files for Use

If you need to create NWD files from other formats, such as DWG or DXF, the process involves:

  1. Prepare Your Model: Open your design in Autodesk Navisworks Manage.

  2. Export from DWG: Use the command NWCOUT to export your DWG file to NWC format, which is read by Navisworks.

  3. Publish as NWD: Once you have the NWC file in Navisworks, go to File > Publish and select the option to save it as an NWD file.

Frequently Asked Questions

1. Can I edit an NWD file in AutoCAD?
No, NWD files are designed for viewing, not editing. You will need to convert them to a format like DWF or use alternative methods for reference.

2. What program can I use to open NWD files?
You can use Autodesk Navisworks Freedom for viewing NWD files. This software is specifically designed to allow users to explore 3D models without editing capabilities.

3. Is it possible to convert NWD files to other formats?
Direct conversion of NWD files to editable formats is not supported. Instead, you can export them to DWF in Navisworks and use that in AutoCAD.

About the author

Wei Zhang

Wei Zhang

Wei Zhang is a renowned figure in the CAD (Computer-Aided Design) industry in Canada, with over 30 years of experience spanning his native China and Canada. As the founder of a CAD training center, Wei has been instrumental in shaping the skills of hundreds of technicians and engineers in technical drawing and CAD software applications. He is a certified developer with Autodesk, demonstrating his deep expertise and commitment to staying at the forefront of CAD technology. Wei’s passion for education and technology has not only made him a respected educator but also a key player in advancing CAD methodologies in various engineering sectors. His contributions have significantly impacted the way CAD is taught and applied in the professional world, bridging the gap between traditional drafting techniques and modern digital solutions.

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