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<p>[QUOTE=&quot;John Burgess, post: 4918323, member: 105098&quot;]this &quot;rim splitting&quot; is accomplished with an acid strong enough to dissolve copper, but weak enough not to dissolve the nickel in the clad layers on each side of the copper core. in essence the copper is eroded away out of the middle of the coin leaving the nickel behind. done wrong it will also corrode/dissolve the nickel but more slowly, or in the case of a clad coin where the outer layer is copper nickel, it will get at the copper in the alloy. and corrode the nickel.</p><p><br /></p><p>Now, I&#039;m not going to tell you the acid, and I am going to tell you it&#039;s dangerous so don&#039;t try it at home, you might hurt yourself or someone else in your house.</p><p><br /></p><p>Technically if the pH of water is right metals will dissolve and become part of the solution, which is how Copper, Zinc, Iron, Magnesium, Lead, ect. ect. get in water..... when the pH of water drops, the solubility of metals increases as the dissolve and the particles get suspended in the water.</p><p><br /></p><p>the same thing can be said for soil or dirt, when the pH gets low, metals corrode and dissolve.</p><p><br /></p><p>Yeah, I&#039;ve got nothing better to do today.....[/QUOTE]</p><p><br /></p>

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