Importing 3D models in 3ds Max can be a crucial aspect of a 3D artist's workflow. OBJ (Wavefront .obj) and MTL (Material Template Library) files are commonly used for 3D models and their associated materials. Here's a step-by-step guide to importing OBJ with MTL in 3ds Max:

1. Open 3ds Max: Launch 3ds Max on your computer to begin the importing process.

2. Select Import: Go to the main menu and select 'File' > 'Import' to open the file explorer.

3. Locate OBJ File: Navigate to the directory where your OBJ file and its associated MTL file are located. Select the OBJ file and click 'Open'.

4. Adjust Import Settings: A pop-up window will appear with import settings. Ensure that the 'Files of type' drop-down menu is set to 'Wavefront Object (*.obj)'.

5. Enable Import Options: Check the 'Import materials' and 'Material library' options to ensure that the MTL file is included in the import process.

6. Click OK: Once you've adjusted the import settings, click 'OK' to import the OBJ with its associated MTL file into 3ds Max.

7. Verify the Import: After the import is complete, verify that the 3D model and its materials have been successfully imported into 3ds Max.

8. Make Adjustments: Depending on the complexity of the 3D model, you may need to make adjustments to the materials, textures, and other properties within 3ds Max.

By following these simple steps, you can successfully import OBJ with MTL in 3ds Max and begin working with 3D models and their associated materials. This process allows you to leverage the full potential of 3ds Max for 3D modeling, rendering, and animation projects. Experiment with different 3D models and materials to enhance your skills and create stunning visual content in 3ds Max.