Euclid, I think this is the scratch pattern from the black arkie. I ran it way longer than normal to make sure it was what I was seeing. One thing to remember is that this is at 50x magnification in a microscope. I think most Loups are 10x. So it will definitely exaggerate things on 50 power. I did notice that the 3000 grit wet/dry left a better finish to the naked eye (mirror) than the black arkie. I'd like to see that under the scope.

For future reference if I see a bend in the spine, is there a way to correct it besides... bend.................. SNAP!! lol