Are you looking to export your 3D models created in Maya to be used in other 3D modeling software or 3D printing? The OBJ format is widely supported and can be easily imported into various programs. Follow these steps to export your Maya file in OBJ format:

1. Open your project in Maya: Launch Maya and open the project containing the 3D model you want to export.

2. Select the 3D model: In the viewport, select the 3D model or models that you want to export. If you have multiple objects, make sure to select all of them that you want to export together.

3. Navigate to File: Click on the 'File' menu in the top-left corner of the interface.

4. Choose Export Selection: From the 'File' menu, navigate to 'Export Selection' to open the export options.

5. Set the file type to OBJ: In the export options window, set the 'Files of Type' dropdown menu to 'Wavefront OBJ (*.obj)'.

6. Specify export settings: Choose the desired export settings such as file name, export location, and OBJ export options. You can adjust settings like scale, triangulation, and material export options based on your requirements.

7. Click Export: Once you have set the export options, click the 'Export' button to begin exporting the selected 3D model as an OBJ file.

8. Verify the exported OBJ file: After the export process is complete, navigate to the export location and verify that the OBJ file has been successfully created. You can open the OBJ file in other 3D modeling software or use it for 3D printing.

By following these steps, you can easily export your Maya file in OBJ format, making it compatible with a wide range of 3D modeling and 3D printing workflows. Whether you're collaborating with others who use different software or preparing your model for 3D printing, exporting to OBJ format ensures compatibility and flexibility in your 3D projects.