dart guy wrote:Careful with that, it is in fact illegal to damage money, unless it is for educational purposes. ("i was only doing it for the betterment of our education"

)
I think the correct reference is:
"Whoever fraudulently alters, defaces, mutilates, impairs,
diminishes, falsifies, scales, or lightens any of the coins coined
at the mints of the United States, or any foreign coins which are
by law made current or are in actual use or circulation as money
within the United States; or
Whoever fraudulently possesses, passes, utters, publishes, or
sells, or attempts to pass, utter, publish, or sell, or brings into
the United States, any such coin, knowing the same to be altered,
defaced, mutilated, impaired, diminished, falsified, scaled, or
lightened -
Shall be fined under this title or imprisoned not more than five
years, or both."
Since we are not using the altered currency fraudulently I think we are OK.
BTW: I just pierced a quarter with a piece of 0.025" wire fired from my pen gun. The point just barely went through.
