Just add thighbone

What's the secret to great sword-making? You've gotta add a dash of human bone, according to one Taiwanese swordsmith.

The Associated Press has a great feature today on Kuo Chang-hsi, a sword-maker in southern Taiwan who peps up his product with human bone. Here's a quote from the story: 

"When I first tried to make a Kanjiang sword I failed," he says, referring to a famous weapon first made in China some 2,400 years ago. "Then I remembered — there's a saying that if one wants to make a good sword, one needs human bones."

http://www.globalpost.com/notebook/china-and-its-neighbors/090908/just-add-thighbone