Click Output
tab Export
to DWF/PDF panel 3D
DWF. At the Command prompt,
enter 3ddwf
In the Export Data
dialog box, specify the name and location of the DWFx file.
Select 3D DWFx (*.dwfx)
from the Files Of Type list. Click Save.
By default, all model
space objects are exported to the 3D DWFx file, and if your drawing
contains xrefs, the Group By Xref Hierarchy option is active.
(Optional) Click Yes
to open the Autodesk Design Review and view the published 3D DWFx
file.