On 4/15/2014 2:25 PM, Gene Heskett wrote: > On Tuesday 15 April 2014 15:19:59 andy pugh did opine: > >> On 15 April 2014 18:11, Gene Heskett <ghesk...@wdtv.com> wrote: >>> Chuckle, but that isn't the one I've been looking for, Kirk. I need a >>> quarter sized coin that says in circular text on one side >> >> What you need is a coining die, then you can make as many as you want. > > Not a bad idea, but how many tons needed for the bottle jack? > > I assume the dies would be good hardened steel. Can that be edm'd? Using > what for electrode material? Probably not with the sharpness of detail in > the text though, because the electrode would also go away.
The detail sharpness can be exceptionally good. A few years ago, The History Channel had a series called "Breaking Vegas" about people who'd come up with ways to win or otherwise acquire lots of money from casinos. One of them was a guy in Rhode Island who figured out how to counterfeit casino tokens. After sinking his life savings into an EDM die sinker and a powerful hydraulic press, he got one token from an Atlantic city casino, mounted it as the electrode in the EDM and made a pair of dies. His next step was finding an alloy close enough to the token to work with the slot machines' coin acceptors. The real token used an alloy that was a protected one used by some other country for coins, but one just a small bit off in % on one of the metals was available to buy. So after spending $50K he finally had one token that worked. His next step was enlisting a friend who owned a high speed punch press to make the planchets. By the end of his run he and his girlfriend were shipping boxes of counterfeit tokens to Vegas, Atlantic City and a couple other places with casinos, then flying over to pick up the tokens. At the time, it wasn't illegal in Rhode Island to counterfeit things like those tokens, just US Currency. He figured he should quit but wanted to make one more Vegas run even though he had a bad feeling about it. Soon as they went up to the cashier at the first place they hit, hands on the shoulder "Please come with us." His counterfeits were so good the only way the casinos could tell the fakes from theirs was to individually assay the metal content and for ones with a center slug of a different metal they could only tell by ripping the token apart to see that the fakes used a different method of holding the parts together. So just one guy from Rhode Island is responsible for the Casinos going to magstripe cards and printed receipts. Some time before that, in Vegas, a dentist made off with a lot of cash from Ceasar's Palace. CP used to use silver alloy tokens with a face value greater than their precious metal content. The dentist made molds from the original tokens and cast up some tokens, lots and lots of them. Then he'd take those to CP and get more cash than it'd cost him to make the tokens. The casino only discovered the scam when they did an inventory and found they had several thousand more tokens than they'd had manufactured. So it was that guy who was responsible for the casinos switching away from using silver tokens to base metal alloy tokens. Then there was the first of the high tech casino heists. An earl model of video poker machine had a back door which would produce a Royal Flush after a long and complicated series of varying coin drops and button presses. Pretty much impossible for anyone to hit by chance. IIRC that one was discovered by an audit of payouts and there were too many royal flush hits, so video of those hits were examined and the players' actions compared, along with examining the firmware in the machines. Then anyone trying that exact string of plays could be busted for cheating. One last thing on "security". A 5 year old boy discovered a back door in the account restriction password on the XBox One. Enter an incorrect password, then on the retry just fill it up with spaces and he was able to play his dad's Call of Duty game. He's now listed as a "security consultant" by Microsoft and was given some free games and other XBox swag. Of course Microsoft fixed the problem. ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
