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<p>[QUOTE=&quot;Detecto92, post: 1601122, member: 75105&quot;]If I can&#039;t prove my knowledge in writing, then lets use some pictures.</p><p><br /></p><p>Test subject: 1964 cent.</p><p><img src="http://i833.photobucket.com/albums/zz257/Phototaker_2010/DSCN5833.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>Now I took a Dremel with a wire wheel and scrubbed the coin for a few minutes.</p><p><img src="http://i833.photobucket.com/albums/zz257/Phototaker_2010/DSCN5835-1.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>In the end result, you can kind of see this &quot;orange peel effect&quot;. This is caused by thousands of tiny little pits in the surface of the coin. It gives it an almost matte kind of look.</p><p><br /></p><p>Here is a close up of these pits.</p><p><img src="http://i833.photobucket.com/albums/zz257/Phototaker_2010/DSCN5843.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>Now let&#039;s look at the large cent again.</p><p><img src="http://i.ebayimg.com/t/1856-BRIADED-HAIR-LARGE-CENT-SCARCE-UNNCIRCULATED-HIGH-GRADE-G8003-/00/s/ODA4WDkwMA==/$(KGrHqVHJDMFCe4jkMqzBQ)odPtosg~~60_57.JPG" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p>Do you see the same pattern?</p><p><br /></p><p>A chemical dip is supposed to remove tarnish, verdigris, or other oxides, it&#039;s not supposed to alter the original metal surface in any way. The only kind of &quot;dip&quot; that could do such a thing is a dip into something acidic. </p><p><br /></p><p>The little steel bristles of a wire wheel dig into the surface of the coin, it removes the tarnish, but it also puts thousands of tiny pits in the coin. Every time the wheel comes across the surface, each one of the tiny bristles stabs the surface of the metal. </p><p><br /></p><p>Now if we were to clean a coin, by using metal polish and a buffer wheel, we would see a different effect. The fields would be much smoother.[/QUOTE]</p><p><br /></p>

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