e.g. Although I have made the front and rear standards and temporarily fitted the bellows, I still don't quite know how I'm going to do the focusing rack. I have a few ideas in my head. I will probably have to try them out firs, possibly with some MDF before I cut up some more oak.
Are you planning on friction-focus or gears/knobs? I'm going the simple route - friction no gears or knobs to complicate the design. I think once I finish this camera I will start a larger 8x10 and have some sort of gear focusing system or something. That's all in my head for now since I have no experience with such things.