After exporting the 2 live objects from Live as pdfs, I tried to combine the 2 into one pdf file as usual, but one of the objects tools (zoom, rotate and reset) stopped working, as well as the texture swap. How can I combine 2 or more than a pdf into one?
You can, however, created linked document structures to include multiple 3D models. For example, you can have an index document that provides links to multiple additional PDF docuements. Each of these can have their own 3D model.
i can combine two pdf files with one pdf processing sdk, but i don't know whether it will workd for 3D. not so much experience in 3D models. and if you need to try out, you can find free trial package.