Bob, the threads appears to be plated?
Get some muratic acid (swimming pool acid) and drop it in some; this will safely strip the zinc plating off, (and start the muratic to being converted to Zinc Cloride a good acid for cleaning copper/brass for soldering (i.e. old school radiators. when the muratic stops reacting to added zinc, its fully zinc chloride)
Once stripped, rust, wire brush, rust, wire brush... till you get the patina you want. I'd do that after brazing. (The heat of brazing will also age it)
Good idea - one that had occurred to me. Might take a while!
The threads are not plated; they're freshly cut. I started out with a zinc plated bolt with short threads, but removed the plating with acid before threading and shaping- took all of two minutes!
As for rusting, it just struck me that dousing it in the e-tank with the polarity reversed might accelerate the process considerably!
Just an idea. What type of jaws are those?







