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<p>[QUOTE=&quot;ldhair, post: 2755882, member: 11540&quot;]Acetone only melts organic stuff that&#039;s on the coin. What&#039;s under that organic stuff may not be pretty. The acetone is dirty after the first bath. A second or third bath in fresh acetone help wash that away.</p><p>Take a drop of the acetone from the first bath and let it dry on a piece of glass. That will give you an idea of what is floating around in the solution. Do that with each batch and you know when you have washed away everything the acetone can help with. I have never harmed a proof with acetone.[/QUOTE]</p><p><br /></p>

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