Your best bet may be to find a local machine shop that has CNC capabilities. Back in 2018, when I redid my panels, a local fellow on my field had a CNC plasma cutter. I gave him a rough draft of what I needed and he cut a "draft" out of cheap thin metal. Once adjustments were made, he cut a final panel.

N8395M 1970 A150K
The Carolina Swampfoxes founding member
I've landed my Aerobat in the following states:
[Linked Image from visitedstatesmap.com]