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<p>[QUOTE=&quot;GDJMSP, post: 33091, member: 112&quot;]Well if you split the time down to nanoseconds I suppose it could be considered after the strike in some cases. </p><p><br /></p><p>Mechanical doubling is my preferred term - for it occurs at the moment of the strike. 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>Those who call it ejection doubling are also correct in some cases - but again this occurs at the moment that the dies begin to separate but are still in contact with the planchet. Again something shifts causing the doubling effect.</p><p><br /></p><p>But in any case or with whatever name you choose to use - the dies must still be in contact with the planchet for a fraction of a second in order for the effect to happen. Otherwise - it cannot happen.[/QUOTE]</p><p><br /></p>

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