Hi guys,
I also read that tip and used it to restore a bent needle tip. I used my Dremel but ran it slower and kept it at a shallow angle. I didn't wrap it up, just slid it against the fine sandpaper. After that I put a few drops of metal polish onto an automobile shammy and using the same method I polished it up very nicely. As you drag it across the shammy,you will be able to see how fine a point it is getting as you raise the angle. It has worked on two needles so far that had ...ahem ..."mishaps"!