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<p>[QUOTE=&quot;desertgem, post: 1230164, member: 15199&quot;]If the gunk ( what ever it is) , doesn&#039;t come off with distilled water soak or acetone, it won&#039;t in an ultrasonic cleaner, even with questionable cleaning solution. I used one intended for jewelry with a plastic holder and only used one coin at a time, but it still produced microscopic scratches on the coin where there was contact. How one could suspend the coin in the solution with no contact ? I even bought a waterpik device, and cranked up the voltage with a variac, but all I got was soaked. Didn&#039;t work either, but cleans gums well still.( has a little whine every once in a while, but can&#039;t bring myself to return it to Costco after such an experiment.</p><p><br /></p><p>Read about it here starting about post #19. The rest is interesting if you are tempted with DMSO.</p><p><br /></p><p><a href="http://www.cointalk.com/t68146/" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/t68146/">http://www.cointalk.com/t68146/</a></p><p><br /></p><p>Jim</p><p><br /></p><p>I still use Bad Thad&#039;s products and if used properly is the best I can do with little to no damage for the results.[/QUOTE]</p><p><br /></p>

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