I built a Bender 4x5 a few years back. While I made some sweet negatives with it, I wouldn't recommend taking that route...not because it's especially difficult but because the end product isn't really worth the effort. I second the vote for a Crown Graphic. Play your cards right and you can have a complete kit (camera, lens and a few holders) for $400 or less. And you can hand hold it. what could be better?