So. This fall, I may have the opportunity to get some cob going.
I'll dig out the clay from where I live, as well as sand as I'm lucky enough to live in a place that has both. Just gotta dig deep enough.
Though for the fiber, I'm wondering. Is there a substantial difference between different type of fibers? Locally, I've got straw pretty much for free. Could get my hands on soy. And there are hemp bales at 50$ a piece. That sounds pretty marketable.
I'm been looking at hempcrete too... so I guess all those "*cough*crete" and a mix of either lime or cement with a fiber, such as hemp shiv, saw dust or even paper? Where as cob is only sand/clay/fiber --- so it doesn't have that strong caustic reaction that cement/lime has?