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<p>[QUOTE=&quot;GDJMSP, post: 2522990, member: 112&quot;]Gotta admit a broad band laser is pretty cool, never seen one before. But then I thought it was pretty cool when I saw a 36 inch diameter cylinder of stainless steel sliced like bread with a high pressure jet of water in about 3 seconds. And that was 35 years ago. </p><p><br /></p><p>Of course getting rust off of metal like that in the video is almost as easily done (though admittedly not quite as fast) simply by using naval jelly - wipe it on and wipe it off. And that&#039;s been around for what - a hundred years ?</p><p><br /></p><p>But a broad band laser ? Yup, that&#039;s pretty cool in my eyes !</p><p><br /></p><p>And yes, Insider is correct. Coin doctors have been using lasers to make light scratches, hairlines, and contact marks magically disappear on coins for years.[/QUOTE]</p><p><br /></p>

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