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<p>[QUOTE=&quot;Conder101, post: 1271197, member: 66&quot;]You probably wouldn&#039;t want to do an octagon.&nbsp; Multisided coins, especially when used in vending machines work better with an odd number of sides (it allows them to roll easier) and I would consider nine sides to really the minimum number of sides.&nbsp; Also a coin with an odd number of sides is easier to strike, especially as the number of sides increases.&nbsp; The reason is that you can still use a round planchet.&nbsp; (A multisided planchet give you the problem of having to make sure it is orientated properly in order to drop into the coining chamber.&nbsp; If the planchet is rotated any at all it doesn&#039;t drop in and you get mis-strikes.)&nbsp; Using a round planchet the force of the strike is used to force the metal out into the &quot;corners&quot;.&nbsp; With an even sided coin the sides are opposite the sides and corners are opposite the corners.&nbsp; The planchet can&#039;t be any larger than the side to side distance and a greater force is needed to get the corners filled.&nbsp; With an odd number of sides a side is always opposite a corner and the distance is much closer to the diameter of the largest circular planchet that will fit so less force is needed in the striking.&nbsp; As the number of sides increases the distance from side to corner gets closer and closer to the diameter of a circle.&nbsp; But is you go with too many sides then you lose the distinctive multisided appearance.&nbsp; Personally I find that nine is a good minimum, and 13 to 15 is a good maximum.</p><p><br /></p><p>Having said all that I don&#039;t really see a good reason for changing the coin.&nbsp; If you did and got rid of the dollar note they might circulate if they weighed less than two quarters, but I don&#039;t see a significant advantage to them.[/QUOTE]</p><p><br /></p>

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