If you are doing this on carbon arrows and scrape them with a razor you need to be VERY CAREFULL that you don't start getting in to the carbon fibors. If you are then you are digging in to much. If you are working on alum. arrows you still need to be carefull not to dig in to the alum but they are easier to do. When you re-fletch your arrows, if that's what your doing, then you may want to buy some wraps to put on before you add your new fleches.