Are you looking to export your 3D models from Blender as .obj files? Whether it's for using the models in other 3D software or for 3D printing, saving as .obj is a common and versatile file format. Here's a step-by-step guide on how to do it in Blender.

Step 1: Open your 3D model in Blender. Make sure you have finished modeling and are ready to export it as an .obj file.

Step 2: Navigate to the 'File' menu at the top of the Blender interface and select 'Export' > 'Wavefront (.obj)'.

Step 3: A new window will appear with various options for the .obj export. You can specify the file path, choose whether to export materials and textures, and adjust other settings according to your needs.

Step 4: After you have set the export options, click 'Export OBJ' at the bottom of the window to save your 3D model as an .obj file.

It's as simple as that! Now you have successfully saved your 3D model as an .obj file from Blender. You can use this file in other 3D software or send it for 3D printing.

Additional Tips:

- When exporting as .obj, ensure that you have unwrapped UVs for textures if you want to preserve the materials and textures in the exported file.

- Double-check the export settings to make sure everything is set up as per your requirements before exporting.

By following these steps, you can easily save your 3D models as .obj files in Blender and transfer them across different 3D platforms or prepare them for 3D printing. Exporting as .obj is a fundamental skill for 3D modelers, and mastering this process will make your workflow more efficient and versatile.