Hello ic-racer,
Well, the building probably won't, but the camera will be ;-)
But I've built several wooden large format pinhole cameras before so I'm up to the challenge.
I'm not familiar with the "helical focus mount". Can someone explain this to me?

And I was just wondering: if I really want to keep it simple, can't I just make a body with the lens in a fixed position,
focussing at infinity? This would make it a real P&S camera for landscape photography. Especially if I can replace
the lens with a pinhole, in which case everything will be in focus.Thanks,
Bert