After getting the military placard font from another GF owner I was able to finish a pyrotechnics controller, and several marking placards for projects that were in the shop. When the aircraft mechanics saw those, the asked if I could make some replacement engine fuel tank switch placards for a 1940’s vintage C-47 Dakota.
The placards are all done on .018" aluminum sheeting.
I’m a bit obsessed with aluminum “Makers Mark” plates myself. I made several attempts to do them on the glowforge, but I was not able to produce the results you achieved on Aluminum. I got decent results with powdercoat on Aluminum, but I went with a direct photo emulsion process followed by electroetching to produce my new business cards.