Old 10-21-09, 05:55 AM
  #5  
rm -rf
don't try this at home.
 
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Wet and dry 320 or 400 grit sandpaper can smooth it out. But, even with this fine grit, it's easy to sand too much and make a low spot on the rim. So just reduce any ridges sticking up, don't try to remove the scratches from the braking surface.
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