I spent all morning on polishing some needles and adjusting /cleaning some brushes. Since I have never lapped anything before, it went pretty smooth. I looked at each one before and after each one with a 30x loop and saw a huge difference. Some of them might have been run through a Sharpenair at one point in time cause some had some serious scratches. I tried each one after polishing and they seem to work better without wiping the tip so often. Now, have to figure out what to paint after setting the desk back up for painting.