 Hey, so I'm Daniel Reitz of DIYBookScanner.org and this is the laser-cut book scanner that we're releasing under the GPL today. It's a joint project between myself and Dario de Mora. I created the original design and Dario documented it and made it into proper artwork. And the way it works is really simple. All you do is load in a book and lay down the platen, press this button, and the camera's fire and take two pictures. Turn a page and you've captured both pages. And you just sort of do this ad nauseam until the book is over. It takes about one, you can get about 400 pages an hour. That's sort of the going rate. You can do more or less depending on the difficulty of the book itself. How hard it is to turn the pages and so on. If you have your own laser it costs you next to nothing. If you had to use a laser cutting service it would be different. The standard DIY book scanners are in the range of three to six hundred dollars with cameras and everything. This one, the plywood was 50 bucks and the cameras were 200 bucks. The miscellaneous hardware was another 50 bucks. So it sort of fell in the same range as my first one. That's because I have the laser. Everything is available at diybookscanner.org.