If you're using Autodesk Inventor for your engineering or design projects, you may want to access a 3D view to better visualize your designs. Here's how to do it:

1. Open your design in Autodesk Inventor and navigate to the view cube in the upper right corner of the interface.

2. Click on the 'Home' icon to reset the view to its default orientation.

3. Use the mouse scroll wheel to zoom in and out of the design. You can also hold down the middle mouse button and drag to pan around the design.

4. To rotate the view, hold down the Shift key and the middle mouse button, and then move the mouse to rotate the design in 3D space.

5. You can also access different viewing options such as Isometric, Top, Bottom, Front, Back, Left, and Right by clicking on the corresponding faces of the view cube.

6. To access more advanced 3D viewing options, navigate to the 'View' tab on the toolbar and explore the various tools and settings available.

7. Experiment with features such as perspective and orthographic views to find the best display for your design.

By following these steps, you can easily access a 3D view on Autodesk Inventor to enhance your design and engineering projects. Visualizing your designs in 3D can help you identify potential issues, communicate your ideas more effectively, and ultimately create better products. Whether you're new to CAD software or an experienced user, mastering the 3D view in Inventor is a valuable skill for any engineer or designer.