Once I have a final design, I'll see about getting the parts cut from something like .032 (20-gauge) aluminum. For me, the pleasure is in the design and troubleshooting; once I have something that works, I want to move on to the next project. I like to fabricate one-off pieces, but not production runs. I'll probably find someone to cut the rest for me; I'll do the bending unless they want to do that, too.
I have no idea what these would cost, but I'll get an estimate (I don't plan to become suddenly wealthy from them). Besides, your comments were part of my impetus to find a better solution, so I owe you. And paybacks are fun.