If you're a fashion designer or 3D artist using Marvelous Designer, you may want to export your clothing designs as OBJ files for use in 3D modeling software or game engines. Here's how to do it:

1. Open your design in Marvelous Designer and make sure it is finalized and ready for export.

2. Go to the File menu and select 'Export OBJ...' from the dropdown.

3. In the Export OBJ window, you can choose the output path and filename for your OBJ file. You can also customize the export settings such as scale and triangulation options.

4. Make sure to set the scale correctly to match the units used in your target 3D software. For example, if you're exporting for use in Maya, you may want to set the scale to centimeters.

5. If you're planning to use the OBJ file in a game engine, you may need to enable the 'Flip faces' option to ensure the normals are facing the correct direction.

6. Once you've configured the export settings, click 'OK' to export your design as an OBJ file.

7. You can now import the OBJ file into your 3D software or game engine of choice to continue working with your design.

By following these steps, you can easily export your clothing designs from Marvelous Designer as OBJ files for use in 3D modeling and rendering. This allows you to seamlessly integrate your designs into larger 3D environments, animations, or games, and bring your creations to life in new ways.