Braille on Metal Peace Poles
Just as I currently cut the text all the way through the metal, so too would I cut the holes for Braille.
Braille on Stone Peace Poles
Previously I discouraged people from putting Braille on stone peace poles, but if we moved it a little outside the box perhaps it is not such a bad idea. It would have to be much larger Braille than readers of it normally would experience. But it would be possible to make raised bumps, or depressions instead, that were perhaps half an inch in diameter. I'd favor the depressions as they would be so much more durable.