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<p>[QUOTE=&quot;mikediamond, post: 138997, member: 1859&quot;]Rotated die errors are just that -- errors.&nbsp; Both the anvil die and the hammer die are subject to such errors.&nbsp; A rotated die results from at least three causes: 1) incorrect installation, 2) incorrect grinding of guide marks (e.g., &quot;flats&quot;), leading to incorrect installation, 3) a loose die that rotates in its recess.&nbsp; As a result, rotated die errors can be stable or dynamic -- or both.&nbsp; If a loose die is rotating and is then tightened up in the wrong position, you&#039;ll get an early series of dynamic (variable) rotations and a later series of stable (invariant) rotations.&nbsp; Identifying such an error as a &quot;rotated reverse&quot; is untenable, as it&#039;s usually&nbsp; impossible to say which die is in the wrong position.&nbsp; In rare cases, when it is possible to pinpoint rotation (such as a double-strike with rotation on the second strike), it&#039;s always been the hammer die.&nbsp; At least that&#039;s what I&#039;ve found.&nbsp; But the sample of such errors is small and cannot be seen as providing an accurate guide to the relative frequency of hammer vs. anvil rotation.[/QUOTE]</p><p><br /></p>

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