Danny, are you distributing the files for viewing purposes only?

3D PDF has somewhat better security in that not many applications can actually read and use the data in a 3d PDF file. Its possible to disallow saving to STL when you create the 3D PDF so Adobe Reader can't export an STL. Obviously that does not help if someone has an app that can convert the data directly from the 3D PDF (Simlab for example).

Hi Chris,

> are you distributing the files for viewing purposes only?

It's for 3d printing purposes, I just wanted to put something in there in the case someone is sharing the file as their own.
Having Simlab composer myself, yes I would use 3d PDF if the file was for viewing purposes only.

Cheers