re: the frontier blacksmith: I do not think you can honestly expect there to always be hammer marks and scale any more than you can say they all had to be perfect. Back then as today, there were always varying levels of skill in a frontier blacksmith shop-- be it set up under a tree or under a roof. But the individual's skills would grow, and they would put out better products as they progressed. As in any trade, smiths were proud of their growing skills, why would they settle with mediocrity? The consumer certainly wouldn't.
K