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<p>[QUOTE=&quot;Ordinary Fool, post: 2674061, member: 85318&quot;]It is Z, the vertical axis, X and Y would be on the horizontal plane and relate to centering.</p><p><br /></p><p>Take a peek at Tommy&#039;s penny that had at least two die clash strikes (looks like three to me and none of them struck the same place) and see what you think about the speculation about what caused his penny and others just like it. </p><p><br /></p><p>High speed production failures as in a die came loose and was propped up by some thick sliver for the anvil die (unlikely) or the momentum swinging a loose hammer die home and beyond, OR a rod journal/bearing letting go would produce distinct errors prior to a feed malfunction resulting in a blank striking chamber and then the dies clashing... and the feeding/striking resumed. </p><p><br /></p><p>I&#039;d say it would make distinctively different noise although every press room I&#039;ve been in has been so noisy that ear protection was a must.</p><p><br /></p><p>You&#039;d have to be pretty tuned in to feel it. At one time I kept up service/repairs on a huge 500-ton hydraulic press and you could feel in stroke out a massive part from over 100 feet away despite it being much quieter than a high speed 15-ton mechanical unit.</p><p><br /></p><p>To make a vice coin appear exactly like a die clash, the die coin would need some relief. But, they both present the same way with respect to what is mirrored.[/QUOTE]</p><p><br /></p>

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