A well composed well done macro. It's a bit abstract, which I like, but which probably cost you 1/2 point of score on DPC. I didnt' vote, or I would have given this a 6 or 7.
I didn't hit this one in voting, but would have given it a 5 or 6. Composition and B&W are great. I can't tell if you used too much USM or not enough, but the detail/texture just isn't there as I'd like to see it. Also, there is some specs or something making noise in the upper left part. Better detail and clean up the noise and I'd give it an 8.