And "Damascene" is a reference to pattern welding (often called "Damascus" even though it's not the same thing as historical Damascus steel), where different me

And "Damascene" is a reference to pattern welding (often called "Damascus" even though it's not the same thing as historical Damascus steel), where different metals are forge welded together to make laminated patterns: https://en.wikipedia.org/wiki/Pattern_welding https://en.wikipedia.org/wiki/Pattern_welding Here the copper is coated with a very thin barrier layer of rhodium, so there's also a laminated pattern of different metals.