Hi Dave,
I sprayed the whole thing with household bleach then let the rain do its thing. This made for a more even rust color. My plans are to leave the natural rust finish.I also plan on making a piece that covers the exposed concrete footing in order to work with the bleeding rust.The rust color is basically the color of a horse, so this seems the best finish in this case.The image here is not the completed sculpture but is is close.
Frank