Quote Originally Posted by Rinsam View Post
That's the trick to most Japanese weapons, they fold the metal over on itself to strengthen it.

Something like that.
they would fold it over and over to get the impurities out... but that was back when they didnt have STEEL and had to go find iron and create the steel themselves.. now days we have factories that can produce any type of steel w/ what ever carbon content you want so folding isnt needed.. and is only done for aesthetics...