Answered
When I generate a 3d PDF using one of my Inventor assembly models, I notice that a right-click will allow the PDF recipient to export the data as a STEP or IGES file if he/she happens to have more than just Adobe Reader. How can I disable this unintended capability to protect my 3d data?
I've posted a quick tutorial explaining how to get rid of both the context menu options and stop the file opening in 3D Reviewer:
http://uvsar.blogspot.com/2010/05/acrobat-3d-pdfs-stopping-export-to-3d.php