I removed the math thing, I like it already, but I had to get a different filter to stop the spam registration problem.
I will keep the laser in mind for the next design. I would love to share ideas with you about the next printer, so when you are ready, either start a thread or mail me. I am sure that the both of us can come up with something great.
Your digitizer looks great. I like the way it is constructed. How long would it take to get a decent duration of film digitized. It looks like a fairly slow process.