[thepencilandpaperguy]

If I'm given to understand it correctly, most of the world actually uses superior grade implants, compared with the US. (The next gen is hung up in testing) So in Mexico (assuming they don't really just use a water balloon.) you might have better odds of complications, but the implant itself may actually be of a higher quality then in the US.

Katanas cutting guns: Um.. I've heard the story with the Browning .50 barrel, too. The 'average' katana will do no such thing. Mind you, the average katana is also made of cheap Indian or Pakastani steel, too.

Now, if you're pulling out some work of absolute art, say a masterpiece blade with the clam-shell cross section, then... it *might* happen, though you're going to dull your blade doing it.

So: Using WWII Guntos, probably isn't going to happen. Using a *real* Masamune, maybe. Using a titanium alloy blade with an internal Mercury reservoir and a blade sharpened over a period of months with water sprays, probably.