If you're working on a 3D modeling project in Unity and need to save an OBJ file for use in other applications, you'll be glad to know that Unity has built-in support for exporting OBJ files. Here's how you can do it in a few simple steps.

Step 1: Prepare Your 3D Model

Before you can save your model as an OBJ file, make sure it's ready for export. This means having proper UV mapping, materials, and textures applied to the model. Once your model is ready, you can proceed to the next step.

Step 2: Open the Export Window

In the Unity editor, select the 3D model that you want to export as an OBJ file. Then go to the File menu, choose Export, and then click on OBJ.

Step 3: Adjust Export Settings

In the OBJ Export window, you can adjust the export settings according to your preferences. You can specify the scale, triangulate the mesh, and choose whether to include materials and textures in the export. Make sure to review these settings to ensure that the exported OBJ file will meet your requirements.

Step 4: Save the OBJ File

Once you've configured the export settings, you can click the Export button to save the OBJ file. Choose a location on your computer where you want to save the file and give it a suitable name.

Step 5: Check the Exported OBJ File

After saving the OBJ file, you should check it in another 3D modeling application to ensure that the export was successful. Make sure that the materials and textures are applied correctly and that the model looks the way you intended.

By following these steps, you can easily save an OBJ file in Unity and export your 3D models for use in other applications. Whether you're building a game, creating a simulation, or working on a virtual reality project, having the ability to export OBJ files from Unity can be incredibly useful. Give it a try and see how it can streamline your workflow and enable you to collaborate with other tools and platforms seamlessly.