I have 'kinda' experimented with the ole vinegar and steel wool thing too. Mine was not a happy experience. I had it in a glass mason jar and put on the steel shelves where I keep a lot of my turning supplies. The solution sorta creeped out and corroded the shelves and rusted some tools and things. Sorta reminiscent of what Vaughn recently experienced, albeit to a much lesser extent. My limited experience is that it works very well on oak.
"Folks is funny critters."
Think for yourselves and let others enjoy the privilege to do so, too. ~Voltaire