Are you looking to add 3D models to your After Effects projects? Creating an OBJ file in After Effects is a great way to incorporate 3D elements into your animations. Here's a step-by-step guide to help you get started.

1. Start with a 3D Model: Before you can create an OBJ file in After Effects, you'll need a 3D model to work with. You can either create your own 3D model using software like Blender or Cinema 4D, or you can download pre-made 3D models from online marketplaces.

2. Import the 3D Model into After Effects: Once you have a 3D model ready, import it into After Effects. You can do this by going to File > Import > File, and selecting the 3D model file from your computer.

3. Set Up Your Composition: After importing the 3D model, create a new composition in After Effects. This will be the canvas where you'll animate and manipulate the 3D model.

4. Apply Textures and Materials: If your 3D model requires textures or materials, you can apply them in After Effects using the built-in tools. This step is crucial for adding realism to your 3D model.

5. Export the OBJ File: Once your 3D model is ready and the composition is set up, it's time to export the OBJ file. To do this, go to File > Export > Export As > 3D Model, and select OBJ as the file format. Choose a location to save the file, and click Export.

6. Use the OBJ File in Your Projects: With the OBJ file exported, you can now use it in your After Effects projects. Import the OBJ file into your composition just like you would with any other asset, and start animating and manipulating it to fit your needs.

Creating an OBJ file in After Effects opens up a world of possibilities for adding 3D elements to your animations. Whether you're creating motion graphics, visual effects, or animated shorts, incorporating 3D models can take your projects to the next level. With this guide, you'll be able to create and use OBJ files in After Effects with confidence and creativity.