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<p>[QUOTE=&quot;desertgem, post: 3042041, member: 15199&quot;]You are only thinking of mechanical doubling as being rotational only, but when the die is put into the &quot;collet&quot; to be secured, it may be secured at a very minuscule tilt also. Thus the face of the die is not exactly parallel to the other die. This will also give a direction from the affected point on the perimeter of the coin. So a slight rotation as well as a slight tilt can give different amounts of mechanical doubling damage in different places, But almost all are amazingly small. If I remembered where I read this, I would give reference. It was said in a different wordage, but this is my understanding . Jim[/QUOTE]</p><p><br /></p>

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