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<p>[QUOTE=&quot;-jeffB, post: 5316469, member: 27832&quot;]So, some of us have <i>never</i> seen acetone turn copper, but others have.</p><p><br /></p><p>How can we be completely sure that <i>xylene</i> doesn&#039;t <i>ever</i> &quot;turn&quot; copper? I mean, you might have used it on hundreds of coins, but that doesn&#039;t mean that the three-hundred-and-first won&#039;t have some different surface condition that causes it to turn.</p><p><br /></p><p>I can make good arguments for why xylene <i>shouldn&#039;t</i> be able to turn copper. But I can also make good arguments for why acetone shouldn&#039;t.</p><p><br /></p><p>Besides, I can make good arguments <i>against</i> using xylene in general. It&#039;s more toxic than acetone, harder to dispose of, and increasingly harder to get.</p><p><br /></p><p>I feel like it&#039;s worthwhile to keep having these discussions, because sometimes people <i>do</i> bring new information. I apologize if it gets tiresome. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie3" alt=":(" unselectable="on" unselectable="on" />[/QUOTE]</p><p><br /></p>

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