How to Export 3D Models to STL Files in AutoCAD and NanoCAD

Exporting 3D models to STL (stereolithography) files is essential for 3D printing, rapid prototyping, and visualization. Both AutoCAD and NanoCAD support this functionality, albeit with slightly different methods. This guide walks you through the steps to export STL files in each software.

Exporting STL Files in AutoCAD

AutoCAD provides the STLOUT command to convert 3D models into STL files. Follow these steps:

Steps to Export an STL in AutoCAD

1. Prepare the Model:
   • Ensure your 3D model is complete and watertight (no gaps or holes).
   • Use the FACETRES command to control the mesh quality. A higher value (e.g., 10) results in finer meshes.
2. Activate the STLOUT Command:
   • Type STLOUT in the command line and press Enter.
3. Select the Objects:
   • Click on the 3D solids, surfaces, or meshes you want to export.
4. Specify File Name and Location:
   • After selection, AutoCAD prompts you to specify the file name and save location for the STL file.
5. Save the File:
   • Click Save, and your STL file will be generated.

Tips for AutoCAD Users:

• Check STL Quality: Use slicer software or an STL viewer to verify the exported file.
• Unit Settings: Ensure your drawing uses the correct units (e.g., millimeters for 3D printing).

Exporting STL Files in NanoCAD

NanoCAD also supports STL file export through its export options. Here’s how to do it:

Steps to Export an STL in NanoCAD

1. Prepare the Model:
   • Make sure the 3D model is watertight and ready for export.
   • Adjust the mesh quality if necessary (refer to NanoCAD’s documentation for advanced options).
2. Access the Export Feature:
   • Go to the menu bar and select File > Export.
3. Choose the STL Format:
   • In the export dialog, select STL (*.stl) as the desired file format.
4. Select Objects:
   • Highlight the objects you wish to export as an STL file.
5. Specify File Name and Location:
   • Enter a name for your STL file and choose a destination folder.
6. Save the File:
   • Click Save, and the STL file will be created.

Tips for NanoCAD Users:

• Ensure Compatibility: Some versions of NanoCAD may require additional modules for STL export.
• Post-Export Checks: Use a slicer tool to confirm the file’s integrity before 3D printing.

Comparison of AutoCAD and NanoCAD for STL Export

Exporting STL files is a straightforward process in both AutoCAD and NanoCAD. AutoCAD’s command-line approach offers precise control, while NanoCAD’s menu-based interface provides a simpler workflow. Regardless of the platform, ensure your models are optimized and verified for 3D printing to achieve the best results.