Hacksaw,
You could just wrap the rods with 280 or 320 wet/dry, and grind away. Then go to 400 maybe before using your medium stones. It works, I've done it.

If you cut your strips of wet/dry just right, they'll wrap around the rod so you can clip them with paper binder clips or small sping clips. I admit though, the diamond rods would be nice, but as far as I know they only sell them in fine. I'd want coarse or at least medium to re-bevel (not re-profile) the edge.