This shows the scanner and process that I use. https://www.youtube.com/watch?v=niwLAbgRpDE
The plans for the scanner as well as links to all the software I use is in the video description. With the exception of the cameras and lighting system, it's basically the same as the Archive scanners that the Internet Archive uses for non-destructive book scanning.
At some point I'm going to pick up a Visioneer Patriot H60 for doing loose duplex scanning. It's got a reasonable (120 page) ADF and isn't outrageously expensive.
g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://scarlet.deltasoft.com - Get it _today_!