3D modeling is an essential part of creating stunning visuals and animations. If you've been working with OBJ files and need to import them back into 3DS model format, you're in the right place. Here's how you can do it:

1. Use 3DS Max: 3DS Max is a popular 3D modeling software that allows you to import OBJ files and convert them back to 3DS model format. Simply open 3DS Max, go to the 'File' menu, select 'Import', and choose your OBJ file. Once imported, you can then save the file in 3DS format.

2. Convert with online tools: There are several online tools available that can help you convert OBJ files to 3DS format. Simply search for 'OBJ to 3DS converter' and you'll find various options. Upload your OBJ file, choose the output format as 3DS, and let the tool do the conversion for you.

3. Use Blender: If you prefer using open-source software, Blender is a great option for importing OBJ files back to 3DS model format. Simply open Blender, go to 'File' > 'Import' and select 'Wavefront (.obj)'. Once imported, you can then save the file in 3DS format.

4. Consider plugin options: Some 3D modeling software may require specific plugins to help with the import process. Check if there are any available plugins for your software that can assist with importing OBJ files back to 3DS model format.

5. Check for compatibility issues: When importing OBJ files back into 3DS model format, it's important to check for compatibility issues. Some features or textures may not translate perfectly, so be prepared to make adjustments as needed.

By following these simple steps and utilizing the right tools, you can easily import OBJ files back into 3DS model format for your 3D modeling projects. Whether you're using 3DS Max, Blender, or online converters, there are plenty of options to help you achieve your desired results. Happy modeling!