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<p>[QUOTE=&quot;Captainkirk, post: 1080726, member: 2356&quot;]&quot;For those of you who don&#039;t know about the Blakesley Effect, when a partial (clipped) planchet is fed into the upsetting mill to form the edge, the pressure drops to zero when it reaches the missing portion. This also causes the pressure to be reduced on the opposite edge of the planchet, i.e. 12 o&#039;clock and 6 o&#039;clock, and the rim is not as well formed as it should be. Once in the coining chamber, this weakness of the opposite rim will appear as a weak strike with less than sharp details.&quot;</p><p>Above quote is copied from a post by CMP9ball, a member here.</p><p><br /></p><p>Read more: <a href="http://www.cointalk.com/showthread.php?t=108232&amp;pagenumber=#ixzz1BGB1ktqT" class="internalLink ProxyLink" data-proxy-href="http://www.cointalk.com/showthread.php?t=108232&amp;pagenumber=#ixzz1BGB1ktqT">http://www.cointalk.com/showthread.php?t=108232&amp;pagenumber=#ixzz1BGB1ktqT</a>[/QUOTE]</p><p><br /></p>

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