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<p>[QUOTE=&quot;Pete Apple, post: 26569080, member: 103982&quot;]<b>An explanation of the difference between “Spherical” and Exponential Curvature:</b></p><p><br /></p><p><b>This image is an imaginary cross section of the possible curvatures of the crown/basin of a Die/Coin.</b></p><p><br /></p><p><b>Imagine the placement and orientation of the Die/Coin on each curve where the center is placed at the “flattest” point of each curve and follow the shape of the curve to the rim/edge/die gutter.</b></p><p><br /></p><p><b>Placement on the “Spherical” results in the same curvature at each placement point from the center to the rim/edge/die gutter. However, placement on the Exponential Curve produces a different curvature from each placement point to the rim/edge/die gutter, growing steeper towards the periphery. The “steepness” varies as the point of placement changes. </b></p><p><br /></p><p><b>The area bracketed by Red is the most likely the general area covered by the Exponential Curvatures being explored by the Mint.</b>[ATTACH=full]1692816[/ATTACH][/QUOTE]</p><p><br /></p>

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