Rotating 3D objects in AutoCAD can add depth and dimension to your designs. To rotate a 3D object in AutoCAD, you can use the ROTATE3D command. Here's how to do it:

1. Open your AutoCAD project and navigate to the 3D object you want to rotate.

2. Type 'ROTATE3D' in the command line and press Enter.

3. Select the 3D object you want to rotate by clicking on it.

4. Specify the base point around which you want to rotate the object. This will be the point around which the object will pivot.

5. Enter the rotation angle or use your mouse to dynamically rotate the object to the desired position.

6. Press Enter to complete the rotation.

By utilizing the ROTATE3D command, you can easily manipulate 3D objects in AutoCAD, allowing you to view your designs from different perspectives and angles. This can be especially useful when creating architectural designs, mechanical components, or any other 3D models.

Additionally, you can also use the Reference option within the ROTATE3D command to specify a point other than the base point around which to rotate the object. This allows for even more control and precision in rotating your 3D objects.

In conclusion, rotating 3D objects in AutoCAD using the ROTATE3D command is a powerful tool that can enhance your design capabilities. Understanding how to effectively manipulate 3D objects will allow you to create more dynamic and visually appealing designs. So, next time you need to adjust the orientation of a 3D object in AutoCAD, remember to use the ROTATE3D command for precise and efficient rotations.