Click Output
tab Export
to DWF/PDF panel 3D
DWF. At the Command prompt,
enter 3ddwf
In the Export Data dialog box, specify
a name and location of the DWFx file.
In the Files of type drop-down list box,
click 3D DWFx.
Click Save.
By default, all model
space objects are published 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.