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<p>[QUOTE=&quot;mynamespat, post: 2629999, member: 83738&quot;]You aren&#039;t taking into account how Tooling works.&nbsp; In order for a tool to work, it must be harder than the metal being worked upon.&nbsp; Thus, the die will need to be a harder steel than the coin.&nbsp; The file would then need to be a harder material than the die.&nbsp; if you make a file from a softer metal it would be ineffective.&nbsp; When you brute force two pieces of metal together, the harder of the two will win the battle- in this case the file.&nbsp; I&#039;m assuming the damage caused by this would be pretty catastrophic- eliminating features and leaving cracks.[/QUOTE]</p><p><br /></p>

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