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<p>[QUOTE=&quot;cpm9ball, post: 891406, member: 24633&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.</p><p>&nbsp;</p><p>Chris</p><p>&nbsp;</p><p>PS. This is obviously PMD.[/QUOTE]</p><p><br /></p>

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