Open the PCB Layout view, then select the 3D Viewer (cube/3D icon) in the toolbar. You can rotate with click-drag, pan with right-click/trackpad drag, and zoom with the scroll wheel.

If no PCB layout exists—or components lack 3D models—the 3D view may appear empty or incomplete. You currently have view access, which is sufficient to inspect the board but not edit it.

I’ll review the PCB layout and component 3D-model coverage, check for mechanical issues, then export a STEP package if project permissions allow it.

STEP export completed:

The 84.7 × 67.5 mm, eight-layer board passed the checked layout/DRC gates. It contains 223 model nodes for 247 components, so some components may appear without detailed bodies; verify connector positions, maximum top/bottom heights, and missing-model locations in your mechanical CAD before enclosure sign-off.