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<p>[QUOTE=&quot;GDJMSP, post: 33153, member: 112&quot;]You are correct - it can occur that way. But it can also occur at the beginning moments of the strike as I reported below. </p><p><br /></p><p>When the hammer die strikes the planchet - something moves slightly and allows the dies or the planchet to shift ever so slightly which is what causes the doubling effect.</p><p><br /></p><p>Imagine this if you will - that the hammer die or the anvil die is not seated correctly. So when strike pressure begins one the dies shifts slightly as more pressure is applied. This shifting or twisting of the dies&nbsp; creates the doubling. </p><p><br /></p><p>All of this from beginning, while the dies are still completely apart - to end, when the dies are once again completely separated - takes place in less than 1 second. And the effect of what we call mechanical doubling can occur at any point in that time frame. It can be at the start - it can be at the end or it can be in the middle.</p><p><br /></p><p>But in any case - the effect is caused by something moving during the strike. That&#039;s all that really matters.[/QUOTE]</p><p><br /></p>

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