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<p>[QUOTE="Oldhoopster, post: 2821107, member: 84179"]The planchets move along a vibrating table that has holes slightly smaller than the diameter. Anything smaller (clipped planchets) fall through and are discarded. It is a large volume, production process, so sometimes undersized planchets make it through. The mint makes about 9 billion cents per year so even if the defect rate is 0.001% (10 ppm) that is the potential for 90,000 clips/year just for cent coins[/QUOTE]</p><p><br /></p>
[QUOTE="Oldhoopster, post: 2821107, member: 84179"]The planchets move along a vibrating table that has holes slightly smaller than the diameter. Anything smaller (clipped planchets) fall through and are discarded. It is a large volume, production process, so sometimes undersized planchets make it through. The mint makes about 9 billion cents per year so even if the defect rate is 0.001% (10 ppm) that is the potential for 90,000 clips/year just for cent coins[/QUOTE]
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