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<p>[QUOTE=&quot;GDJMSP, post: 4669894, member: 112&quot;]These discussions of the pros and cons of using acetone on copper have been going on in coin forums for at least 20 years that I know of. And it&#039;s pretty much always the same, some it&#039;s harmless, others say don&#039;t do it. And until I did the research and dug up that Stonybrook article years and years ago, there had never been an article/paper even written on the subject that I could ever find or that had ever been mentioned by anybody else.</p><p><br /></p><p>But to me, that didn&#039;t matter. The only reason I even went looking for it was to see if I could find anything science based to confirm what I, and numerous others, had been seeing with our own eyes for years ! Namely that, sometimes, when acetone was used on copper coins, the coins would turn weird colors - not always, sometimes.</p><p><br /></p><p>Personally, I&#039;ve always been a pretty strong believer in what I see with my own eyes, especially when it happens many times. When that happens I don&#039;t need books, articles, or papers to explain it to me. That&#039;s because I don&#039;t care WHY it happens. To me, it only matters that it DOES happen ! The reason it happens is completely immaterial.</p><p><br /></p><p>Also, when you consider that there is an alternative choice of solvent to use on copper, namely xylene, that does everything for you that acetone will do, and some things that acetone won&#039;t, and that NEVER causes copper to turn weird colors. Risk on one hand - that you have seen with my own eyes -&nbsp; no risk on the other.</p><p><br /></p><p>Well, I don&#039;t know about anybody else, but I don&#039;t need to be a rocket scientist to make a choice like that ! Nor do I need a rocket scientist to tell me that I&#039;m making a bad choice. Especially when even they will agree that xylene will do what needs done - with no risk.</p><p><br /></p><p>But hey, that&#039;s me.[/QUOTE]</p><p><br /></p>

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