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.
So far I've used it for four sets of fins. The first was the booster for the just-reissued Multi-Roc and I'm not entirely happy with how that came out. Part of it is that the wood the fins were laser cut from wasn't as flat as it should be. The second set was the Multi-Roc sustainer and that came out better. Then I've done two of Andy Jackson's Eggstravaganza-18s with the thin G10 fins....and those I am much happier with.
The proof will be in the flying, of course.
In the few weeks I need to build most of my fleet (or at least practice models) for NARAM-61 and so it's going to get some use, for sure. There are a couple more sport models in the near term queue as well....