I'm trying to build a book scanning platform, and I need a thin sheet of clear material which will be used to hold open the book in order to image the pages. I was contemplating using plexiglass, but glass is certainly an option as well. I am more concerned about the cost than anything. I also need to be able to attach this material to a robotic arm in order to raise and lower it. I really have no idea where to begin with this project.