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<p>[QUOTE=&quot;gatzdon, post: 277777, member: 8247&quot;]My guess is the metal rack is painted.</p><p><br /></p><p>put a CD in the microwave for 5 seconds for spectacular (but harmless) display of the effects you described.&nbsp; Metal doesn&#039;t need to touch anything else to convert the microwaves to thermal or electrical energy.</p><p><br /></p><p>I firmly believe that the magetron issue has been mitigated over the decades with better failsafe designs.&nbsp; Didn&#039;t see the mythbuster episode, but I&#039;m betting they used all newer microwaves.</p><p><br /></p><p>I will admit, all my information is from lots of reading and personal experience, but who knows just how accurate or thorough either source was.</p><p><br /></p><p>Back on topic, Can we all agree that the biggest risk to the coin with OP&#039;s method is exposing the pitting caused by years of corrosion.&nbsp; Or is there some risk of causing additional damage to the coin using the OP&#039;s method?[/QUOTE]</p><p><br /></p>

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