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Yeah that is pretty awesome. I agree, as long as the hardened steel is where the edge is, you should end up with a good shave anyways.

Oh sorry, I should have been clearer. I was referring to the original sword, not your awesome razor blade hehe.

That also brings up another question in my mind. Do you think that the type of...

Wow that is pretty cool! Who was the smith of that katana? Also somewhat a shame the blade hasn't been polished to see the hada, nioi/nie.