http://www.etch-o-matic.com/metallb.html

"Don Stauffer in Minneapolis" wrote in message
...
I forget how they make those photo-anodized nameplates. These are the
ones on aluminum, where the background ends up black anodize and the
writing is in aluminum.

I can see two ways- wonder which is actually used. Do they mask off the
writing, and then anodize the rest? Or do they anodize and dye the
whole thing first, and then etch away the writing area?