Yes! Once I get the seatpost (this part: http://pencerw.com/feed?tag=seatpost) done, I want to start working on a full bike frame, made to order and assembled individually.
I think connecting (carbon) tubes could be a way to go.
Yeah, for sure. Carbon fiber tubing is great when you need a long structural element - no need to print that, in my opinion.
I can't find it right now, but at some point someone had made a kit of bike-frame joints, with the tubes to be supplied by the builder from locally available materials. PVC pipe and hand-whittled wood with bark still on were demonstrated. It was really cool.