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<p>[QUOTE=&quot;Kentucky, post: 1723655, member: 33176&quot;]I actually am a chemist, so let me give a short reply.&nbsp; Making carbon tetrachloride is not an easy task and involves EXTREMELY hazardous materials.&nbsp; Carbon Tet itself isn&#039;t really that bad, we used to use it for cleaning all the time.&nbsp; Same for benzene, but both of these chemicals have shown themselves to be cancer causing agents and not really that necessary in that there are substitutes.&nbsp; Acetone is reputed to cause discoloration of copper surfaces although I haven&#039;t tried it myself.&nbsp; I know of no issues of using acetone on silver or nickel as long as the acetone is pure and the rinsing is thorough.[/QUOTE]</p><p><br /></p>

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