Bernard, that makes me really happy! Art and Geoffrey made these jigs to be used. When I first saw the post advertising it, it had been up quite a while and nobody had responded, so I did, thinking it would either make a good spare or I'd pass it along to a teammate who didn't have one. I know most reading this would think it insane to spend that kind of money to have a spare, but that's how much I think of Art's jig. It is a truly elegant piece of equipment meant to produce world-class results. So I'm really happy to have you joining those of us who love to build ultra-high-performance low power rockets.
Steve