I am designing a book scanner (I will be using a digital camera), and I need some advice for constructing a platform that will properly support large books. Through much research I have determined that a V-shaped cradle will be the best platform since this will tend to reduce the curvature of a book. However, this will still have to deal with the problem of curvature as I move towards the center of the book. The pages that have been turned will tend to pull on the spine altering its position so the spine is not resting on a flat surface but is at an angle because of the V-shaped cradle. I'm wondering if I left a gap at the bottom of the cradle if this could allow the spine more flexibility. My attached diagram illustrates this. However I must develop some alternative support to hold the spine. What are some methods I could use that would provide support that is flexible? One possibility that I considered is to have a bag filled with small, soft, rubberlike balls.