Step 4Enlarge the hole
iImage Information

This is the trickiest part. You need to make the hole large enough to get the dremel tool into it. Once you can get the dremel tool in you make the hole large by grinding away with the dremel, but before you can do that you'll need to enlarge it enough some other way. There are a couple possibilities: you can drill it, use a reamer, or even an industrial hole-punch. Drilling it is a bit tricky because there is not much of the nickel to hold onto while you are drilling - but it is possible if you are slow and careful and don't go too close to the edge with the drill. It may take a few tries to get this done without mangling the coin.
Section 16 of the Crimes (Currency) Act 1981 ("the Act") prohibits the deliberate defacing or destroying of Australian coin or banknotes unless consent has been given by either the Reserve Bank or Treasury. As a general rule, such consent is not given on the grounds that banknotes or coin should not be destroyed or defaced. The legislation covers all Australian banknotes, both present and past.
It is also an offence to sell or possess current coins that have been defaced. Defacing a coin includes coating the surface of the money with any sort of material. The penalty for defacing coins , or selling or possessing money that has been defaced, is $5,000 or imprisonment for two years for an individual (or both), and $10,000 for a body corporate. You may also be guilty of the offence of making counterfeit money if you alter a genuine coin.
Wait, I have more.
Where's George.
Dollarbill Origami. (3 words, but whatevs)
Franklin Mint
Coin Jewelry
"Section 331 of Title 18 of the United States code provides criminal penalties for anyone who “fraudulently alters, defaces, mutilates impairs, diminishes, falsifies, scales, or lightens any of the coins coined at the Mints of the United States.” This statute means that you may be violating the law if you change the appearance of the coin and fraudulently represent it to be other than the altered coin that it is. As a matter of policy, the U.S. Mint does not promote coloring, plating or altering U.S. coinage: however, there are no sanctions against such activity absent fraudulent intent."
It's NOT illegal unless you try to pass it off as a coin that it isn't. The key here is the word "fraudulently"...
An example: the penny pressing machines that are at every tourist attraction. (I think just like that Funky Taco up there. Great name by the way.) Why are they allowed to deface the pennies if it is illegal?
*SARCASM SWITCHED TO: ON MODE* Is it an underground conspiracy controlled by the government? Are they secretly putting little listening devices into the pennies so that they can monitor us? No. In fact, the explanation is that it is perfectly legal.
Another example (i'm on a roll!). Store clerks used to - i don't know if they still do - but they used to use markers to check the authenticity of bills worth $20 or more. Why would they be allowed to do that if defacing the bills was illegal? Because it is legal.
In conclusion, the defacing of currency is permitted only if you are not intending to use the defaced currency for scammery (is that a word?) or skulduggery.
if your mad go with foreign coins
THEY ARE USED TO REMOVE A BROKEN SCREW OR BOLT FROM A HOLE BY GOING IN REVERSE AND BORING IT OUT, THEY ARE WIDER IN DIAMETER AND SHARP. ALOT FASTER AND EASIER TO WORK WITH. ..