Exporting 3D files to u3d: The Options

Settings Settings about how the artwork will appear in the exported file

Artwork quality Sets the level of quality for the image in the exported PDF file: Low (1K), Medium (2K),  High (4K).

Background Settings for the color and the image that will make up the exported file's background.

Solid color Sets a color for the background of the exported file.

Image Loads an image that will appear in the background of the exported file.