To Publish Selected Objects in Your Model to a 3D DWF or 3D DWFx File

Click Application menu Export 3D DWF. Find
In the Export 3D DWF dialog box, specify a name and location for the DWF or DWFx file.
In the upper-right corner of the dialog box, click Tools Options.
In the 3D DWF Publish dialog box, Objects To Publish, click Selected Model Space Objects and then click the Select Objects button.
In the model, select the objects that you want to publish.
Click OK.
In the Export 3D DWF dialog box, click Save.
(Optional) Click Yes to open the Autodesk Design Review and view the published 3D DWF or 3D DWFx file.