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<p>[QUOTE=&quot;alurid, post: 4098969, member: 81991&quot;]This effect is best duplicate with a fine (small wire gauge) bristled circular wire wheel on a bench mounted electric motor.&nbsp; The type used also for grinding and polishing wheels.</p><p>[ATTACH=full]1065966[/ATTACH] </p><p>As a coin is pushed against the wire brush it causes friction that creates heat that will soften the metal some.</p><p>As the wire bristles pass over the design element of a copper coin they are bent backwards and then ping forward at a faster than spinning rate and move the copper forward a little bit and creates a wave-like structure that in turn will create another wave-like metal push.[/QUOTE]</p><p><br /></p>

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