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<p>[QUOTE=&quot;John Burgess, post: 8153291, member: 105098&quot;]your link is to curvliinear blanking burrs and cutting burrs specifically, two of a few types of how burrs occur in planchet or blank creation.&nbsp; theres also rolling fold burr,&nbsp; feeder finger damage creating a burr, and ejection damage creating a burr.</p><p><br /></p><p>I&#039;m not saying it happened from feeder fingers, most likely it happened on ejection after the strike. it&#039;s unlikely a defective .999 silver planchet makes it that far prestrike, polishing even, and is hand fed, and nobody notices the huge cutting burr.[/QUOTE]</p><p><br /></p>

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