http://disqus.com/by/jgoodz/enSat, 08 Aug 2009 14:17:19 -0000http://www.keepaa.com/i/d/677813267#comment-14493737<p>I work in a Marble &amp; Granite Shop. And as you might know marble and granite is Stone/Rock. You know what we use to grind down edges and round corners and such.... PAPER... Sand Paper. So I think that's why paper would beat rock. </p>jgoodzSat, 08 Aug 2009 14:17:19 -0000