OBJ files are a common format used in 3D modeling and 3D printing. When working with OBJ files, it's important to know where to put them for easy access and use. Here are some of the best places to store and use OBJ files:

1. Local computer: Storing OBJ files on your local computer allows for quick access and easy sharing with others. You can create a dedicated folder for your OBJ files to keep them organized and easily accessible.

2. Cloud storage: Using cloud storage services such as Google Drive, Dropbox, or OneDrive provides the flexibility to access your OBJ files from anywhere with an internet connection. This is especially useful for collaborating with others on 3D modeling projects.

3. 3D modeling software: Many 3D modeling software applications allow you to import and use OBJ files directly within the program. This makes it convenient to work on your 3D models without having to constantly import and export OBJ files.

4. 3D printing platforms: If you're planning to 3D print your models, you can upload your OBJ files to 3D printing platforms such as Shapeways or Thingiverse. These platforms often have tools for analyzing and preparing OBJ files for 3D printing.

By utilizing these locations to store and use your OBJ files, you can streamline your 3D modeling and printing workflow. Whether you're a hobbyist or a professional 3D artist, having a well-organized system for managing OBJ files can greatly improve your efficiency and creativity.