To Publish Multiple 3D or Combined 2D and 3D DWF Files

Click Application menu Export 3D DWF. Find
In the Publish dialog box, under Sheets to Publish, select the sheets you want to publish and set their Page Setup / 3D DWF setting to 3D DWF.
The sheets that are displayed in the Sheets to Publish group are controlled by the PUBLISHALLSHEETS system variable.
In Publish To group, click to select DWF Format.
Select DWF File from the drop-down list.
Note: The Status of the selected sheet will show, “3D DWF cannot be published to a “Plotter Named in Paget Setup”, until you change the Publish to option to DWF Format.
Click Publish Options. In General DWF Options, set the DWF Type to Multi-sheet DWF.
Select the Publish Output options.
Note: The Precision Override setting does not affect models sheets that are converted to 3D DWF.
In 3D DWF options group, click Yes to publish materials. Click OK.
Click Publish.