OBJ files are a popular format for 3D models, but if you want to create a standalone application from your 3D model, you'll need to build an executable file. In this guide, we'll walk through the steps of using OBJ files to build an executable file.

Step 1: Convert OBJ file to a format compatible with your development environment. Before you can build an executable file, you'll need to convert your OBJ file to a format that is compatible with your chosen development environment. This may involve exporting the OBJ file to a format like FBX or STL that can be imported into your development environment.

Step 2: Import the model into a 3D development software. Once you have the compatible file format, import the model into a 3D development software such as Unity, Unreal Engine, or Blender. These platforms provide the tools and environment to work with 3D models and create interactive applications.

Step 3: Add interactivity and functionality. Once the model is imported, you can add interactivity and functionality to turn it into a standalone application. This may involve creating user interactions, adding animations, or integrating with other software components.

Step 4: Build the executable file. After you've completed the development of your application, it's time to build the executable file. This process will vary depending on your chosen development environment, but typically involves compiling the application and its assets into a standalone executable file.

Step 5: Test and distribute. Before releasing your application, it's important to thoroughly test it to ensure it functions as expected. Once you're satisfied with the results, you can distribute the executable file to others, whether it's for showcasing your 3D model or for commercial purposes.

In conclusion, using OBJ files to build executable files involves converting the OBJ file to a compatible format, importing it into a 3D development software, adding interactivity and functionality, building the executable file, and testing and distributing the application. Whether you're a 3D modeler looking to showcase your work or a software developer creating interactive applications, this guide provides a comprehensive overview of the process.