Well, I'm back on and off with the horn ring creation. I shopped around for a reputable water jet cutting shop that could cut a radius 1/8" X 1/4" X 7/16 inch thick ring out of a 7/16 thick aluminum plate. This ring would serve as the main halo ring for the horn ring shown below that I have been working on for a while now.
Some shops scratched their heads while looking at me strange and some quoted what I predicted, $250 with out the material at the very least. I know there are well worth it, but I'm on a budget with this one and a mission to make it out of thin air.