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<p>[QUOTE=&quot;huntsman53, post: 157042, member: 1242&quot;]Also, quite a bit of the Machine Doubling for the past several years, is a result of what is referred to as chatter! This occurs when the Hydraulic Presses sort of burps when the Dies Strike the Planchet resulting in a Double Strike that usually pinches off a small amount of the previous Strike. While many experts and Mint workers can&#039;t explain what causes this, anyone that has worked with hydraulics, has seen machinery act pretty much in the same way. In a lot of cases, this is caused by air bubbles within the hydraulic system of the machinery.</p><p><br /></p><p><br /></p><p>Frank[/QUOTE]</p><p><br /></p>

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