https://forums.autodesk.com/t5/autocad-forum/create-a-3d-pdf/m-p/5710495#M322028 You need to purchase and use a #D PDF capable driver: Adobe Acrobat (the most expensive variant) and many others do this (Tetra4d, PDF3D and more). Try before you buy. The global market has responded.<BR /><BR />Autodesk hasn't figured out how to write or license the technology yet: you've not had to wait for a few years now. Wed, 08 Jul 2015 12:51:53 GMT pendean 2015-07-08T12:51:53Z