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<p>[QUOTE=&quot;Insider, post: 2656904, member: 24314&quot;]I tried something like that long ago.&nbsp; One side came out beautiful while the other side was completely ugly and ruined.&nbsp; One of my instructors put a gem commemorative half on a dish with some sulfur powder and left it the wall oven with just the heat from the gas pilot light.&nbsp; He said he forgot all about the coin.&nbsp; Several months later, weeks after broiling a steak in the bottom half of the oven. he opened the top half and discovered his long forgotten experiment.&nbsp; The coin was an etched, gun-metal silver-gray, piece of corroded metal!&nbsp; <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie57" alt=":jawdrop:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie23" alt=":bigtears:" unselectable="on" unselectable="on" /><img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie23" alt=":bigtears:" unselectable="on" unselectable="on" />&nbsp; He told us that&#039;s one experiment he would never try again.&nbsp; True story.[/QUOTE]</p><p><br /></p>

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