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<p>[QUOTE=&quot;desertgem, post: 814316, member: 15199&quot;]I have some background in ceramics and my own kiln, and it is possible to eliminate oxidation during a heat process by burning off the oxygen ( mothballs seem to be a favorite in electric kilns, and just a reducing flame in gas or Raku kilns). I think you could do similar experiments in an oven, perhaps covering the coins with a powdered charcoal.</p><p><b>CAUTION: I do think this is a bad idea indoors</b>. I suspect the end result will be worse than the initial, but I have always been an experimenter. Be cautious with the mothballs. only 1 or 2 at a time through the &quot;firehole&quot; and only in outdoor kiln.</p><p><br /></p><p>Better to sell the coin and buy better one&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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