I have used the lab metal on old 704 spools that had heavier damage to them. For minor stuff I would think the Emery option would work great Posted from my iPhone/Mobile device
Location: I'm from Manhattan, Live in CT., but my heart is in SoCo!
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How bad are these dings? I mean, you can sand or try to smooth but your efforts will be fruitless it they are very bad dings. I would sand only if there were scratches or if the were burrs that could snag the line on the beveled edge.