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<p>[QUOTE=&quot;Kasia, post: 1757367, member: 31533&quot;]Actually, die fatigue due to excessive use does tend to be localized, in many cases, to some extent on the letters or areas near the rims. And the spreading can be seen on both sides of the letters there, and seem to spread more towards the rims. Which makes it &#039;uneven&#039; in it&#039;s spreading. So, no, it should not neccessarily be somewhat uniform over the die. What is happening, although I am not an expert, is that the metal is becoming fatigued as well as possibly having issues with # of strikes. If the die is not perfectly aligned for each and every strike in it&#039;s life (and beyond, since the mints tend to overuse them) then the pressure will not be even. Also the metal in a die is not uniform and in the process of making the die, the stresses will not flow evenly throughout the die or even be consistent on every part of the die. You would probably have to have a huge background in metallurgy or some related field where it is applicable to understand metal fatigue, but when metal is fatigued to the point of either breaking or near breaking, it is not usually some uniform nice pattern from what I can understand of it.[/QUOTE]</p><p><br /></p>

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