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<p>[QUOTE=&quot;Numismat, post: 1332451, member: 15019&quot;]Well there&#039;s the really cheap way and the slightly more expensive way. The cheap way can potentially kill you, as it involves cutting and stripping part of the wire from an old household appliance, plugging it into a socket, and touching the coin with the stripped copper wire while having a magnet 10 millimeters from the coin. <u><b>DO NOT TRY THIS AT HOME!!</b></u></p><p><br /></p><p>The best way is to purchase some strong neodymium magnets. Around $50 worth in the right shapes and sizes will suffice. My advice is to buy them directly from one of the many Chinese sellers of magnets on eBay. China is the leading producer of neodymium magnets, and if you buy them from any other place it will most likely be the same Chinese manufactured magnets plus the middleman&#039;s cut added on.</p><p><br /></p><p>Here&#039;s my simple setup (dimensions 110mm x 50mm): <img src="http://i267.photobucket.com/albums/ii314/Numismat/001-10.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" /></p><p><br /></p><p><br /></p><p>I keep it in a plastic baggie to avoid damaging the coins. It doesn&#039;t appear to affect the results one bit. Actually the plastic produces a better friction/static induced electric current than the surface of the magnets.</p><p><br /></p><p>What you want to do is hold it with the flat side up and at a steep angle where an object would normally fall pretty quick. 30 degrees should be fine. Put the coin at the top and let it slide. The result will show if it is electromagnetic or not, as well as how strong. Precious metals are highly electromagnetic.</p><p><br /></p><p>Now the strong magnetic fields exist where the magnets connect to one another and there are many connections in a small amount of space. My setup has such a zone at either end, with a break in the middle.</p><p><br /></p><p>Silver and other precious metal coins will slide slowly through the heavy magnetic zones at either end, while common metal and alloy coins will simply drop with normal gravity.</p><p><br /></p><p>This also allows you to weed out slightly magnetic coins that may otherwise fool this method. Both a slightly magnetic and a precious metal coins would start out sliding slowly at the first zone. However, the inertia from falling through the break will cause the slightly magnetic coin to continue falling through the second zone, while the precious metal coin will immediately get &quot;caught&quot; and slowly slide down the rest of it.</p><p><br /></p><p>Someone had posted a youtube video about the &quot;magnetic slide&quot; technique on this forum a few months back (which is how I first learned of it). You should be able to find it pretty easily.</p><p><br /></p><p>Please note that aligning the magnets into a flat plane is like a Jenga puzzle. You have to align the magnetic fields on each piece to fit with the others it touches. If you try to force it, the whole thing will collapse back into a neat stack in an instant. And with these strong magnets, it hurts A LOT when your finger gets pinched in between.[/QUOTE]</p><p><br /></p>

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