I think you're out of luck for a 3D PDF viewer, but there are viewers available for some other 3D modelling programs, such as AutoCAD. But they are only viewers, the iPad's not up to creating or editting AutoCAD or SolidWorks models. Not sure if you could translate a 3D model in PDF (didn't even know they were available!) into AutoCAD or SolidWorks. Where did you create the 3D models??
Anyway.....
Good to hear from you, I should have said straight away!! You’ll find a whole bunch of iPad enthusiasts in this Forum who are only too willing to help other iPad owners and to hear of their experiences. Don’t be afraid to post any questions you may have or use the ‘Search’ button near the top of the Forum web page. I usually find I discover one new interesting and useful piece of information about my iPad every day - and often not even what I was looking for!!
Hope to hear from you soon with your thoughts about the iPad.
Have fun and enjoy your iPad
If you don’t already have it you can download a copy of the iPad manual for free from
http://manuals.info.apple.com/en_US/...User_Guide.pdf
Tim
Scotland