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Soft sword of steel to do what a good

Wu Fei good REN2010-03-27 20:12:03 +0000 #1

before electricity2010-03-27 20:15:17 +0000 #2
made of soft steel sword is "spring steel" I studied mechanical engineering and I am more to understand the material.

Compression-resistant spring steel blade. Was also in the spring steel. Any soft steel sword is that they are all done. Other steel not to do.

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