I've been thinking about making a twisted tang integral for some time... one approach I'd thought over would be to lay up rag micarta onto the tang, and vacuum bag seal it. To hold the scales on, I thought I'd either coat the tang with a release agent so I could pop the scales off afterwards, to do the pin work- or, better yet, just press hidden pins into holes in the tang and cast the micarta around and over them. The pins could have a bit of a head peened on, so they'd grip ferociously. It was either that, or figure out a way to inlet wood scales in a traditional manner. In that case, the rate of twist would need to be perfectly even, not very forgeable. That would make twisting a tapered tang more problematic... The idea, for anyone who can't see it, is to have a spiral full tang, the edges of which are visible all the way down/around the handle. Good luck HSC, I've always thought it could be super badass!