I have also built (they are not totally finsihed, but almost) two guitars for myself.. Each was built out of solid, scrap hard woods that I purchased CHEAP at the Rebuilding Center in Portland Oregon. There is a 6 string electric (hollow body) and a 12 String acoustic.
I bought the body of this guitar off of eBay. It had been stripped, and lightly sanded. I built a neck for it out of solid Oak Red Wood also purchased at the Rebuilding Center in Portland.