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<p>[QUOTE=&quot;justafarmer, post: 2958307, member: 3926&quot;]Following is my understanding.</p><p><br /></p><p>Hub doubling on incused designs will mimic mechanical doubling as seen on relief designs. The design element sits above the face of the die. When the hub is pressed into the die - initial contact is with the design element on the die. The metal of the design contained on the die is sheared as the design cavity in the hub is pressed until the hub&#039;s face meets the lower elevated face of the die. </p><p><br /></p><p>On the other hand - Mechanical Doubling of incused designs will mimic hub doubling - similar to the type of doubled die consisting of extra thickness in the design devices. The chattering and movement causes the relief design element on the die to wallow out the design element (which is basically a hole) on the coin.[/QUOTE]</p><p><br /></p>

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