You guys are welcome, I'm really glad this stuff actually helped a few of you out.
Sam- I'm trying

The
hardest part for me is staying focused long enough on ONE knife to finish it.
If I typed somewhere that I'm using J-flex belts on my blades, it was an accident. I LOVE them for handles, but I don't use them on my blades unless there's one on my rotary platen that will work for feathering an edge in. I cut my plunges in pretty darn close to final shape with the 60X, then closer with a 120X, and then if they need dialed in more, I do that sandpaper glued to the block of steel thing (like I did for Lorien's knife thread).
The rotary platen isn't quite stiff enough to do a sharp plunge, so I have to use the "gator" belts to get into a sharp plunge with it. They work since they have a more substantial backing. I had asked Rob a long time ago about the possibility of a stiffer/thicker belt for the rotary platen and the jist of his response (which was polite and friendly as always) was that the belt he is using for them was optimal for the function of the platen, durability, etc. I could have taken the initiative to try and find a stiffer timing belt, but didn't need to bad enough to do it.
All that aside, I keep using my variable 9" disc more and more. My buddy Mike Quesenberry isn't going much past a roughing belt on his blades before going to his disc, and I'm not that far from that at this point. If I can achieve the same (usually better) results with the disc and a half dozen $0.45 sheets of paper, than 4 or 5 belts that cost $4-8 each, it's impossible to overlook that.
I don't think I ever do anything exactly the same though.... I'm always trying to see what works better for me. And that isn't just faster or cheaper, it's got to be a better final product (or at least as good).... but in this case (meaning the 9" disc) it's a happy accident that it's cheaper, faster, and better.
Edited to say, your monitor must be better than mine- I'm not seeing a thumb/finger print. I was thrown by the appearance of a large secondary bevel, since the edge is super thin... but I think it's just shadows. I just got this and another print from Jim in the mail, and they are
AMAZING (I suppose I could check for the fingerprint there, but usually I just see a faint reflection of Jim's camera on my mirror polished guard lugs

).