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Lauren Benson
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Profile of Lauren Benson
Pete Biro must have missed my question, but the other day he mentioned in a post about a special machine that makes coins bigger in diameter.

Is this a machine that can easily be found in a machine shop? I called a machine shop here and they said they had no idea what it could be.

Does anyone else know about this? Pete? I thought of a great mentalism effect using this idea. Thank you very much.
God Bless,
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Profile of Sirakor
I have nothing to do with the machinist trade or coin making etc, but I'll make a guess as to how you could make a coin bigger. If you want to keep the same thickness, you must expand its diameter by adding extra metal. Anything beyond fractions of milimeters will look odd though as the face of the coin doesn't expand. So that'd be a nono. Option two: heat the coin and "squeeze" its faces so it becomes thinner but larger whilst vaguely retaining the rest in correct proportions. Even if you had such a machine I'd hazard a guess that it'll be a difficult enterprise.

How much bigger do you want the coin to be? You could take a Walking Liberty, a 2004 1 ounce US SIlver coin (looks the same as the Walking Liberty, but is Silver Dollar Size), and a 3" Jumbo Walking Lib to "grow" the coin....
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