The linked page says that he uses two different pieces of damascus to make the blade. In Cliff’s photos, it looks like there’s actually three pieces. I wonder how he welds them together, as I don’t see a forging line. I’m guessing that he’s silver-soldering them after HT. Hard not to anneal the edge to dead soft if that’s the case. I have a tube of special paste you use to protect adjacent areas when you apply heat; maybe he used something like that. In any case, beautiful work, but mostly I’m impressed by the guy’s creativeness.