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<p>[QUOTE=&quot;rmpsrpms, post: 3504643, member: 31773&quot;]There is no magic in broadstrikes that limits the outward forces just to them. The collar is there to keep the metal from flowing outward. No collar, metal flows out. This means there is lots of outward force against the collar, caused by the die pushing metal outwards.</p><p><br /></p><p><br /></p><p><br /></p><p>Fully agree with this</p><p><br /></p><p><br /></p><p><br /></p><p>It&#039;s not a belief, it&#039;s simple physics of how the metal flows. I agree with you that metal near the center of a coin, with a significant raised device such as a bust, will flow inward to fill the large void in the die. But I absolutely, adamantly, vehemently, disagree that the flow is outward across the whole die surface. It&#039;s just not so.</p><p><br /></p><p>I like to look at extreme cases to see if my assumptions are correct. The broadstrike example is one of these cases. But an even more extreme case would be completely blank dies, with no features. What would you say if there was no design at all on the coin? The correct answer is that in this case, the flow of metal would be 100% outward radially from the center of the die. This extreme case illustrates that the general flow direction is outward. Adding voids to the die will locally disturb this trend, but only locally, not in general, and the general outward flow will be restored as you get farther away from this local disturbance[/QUOTE]</p><p><br /></p>

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