Now this is a cool picture!

That is cool to see the vapor jacketing like that. I remember one time seeing some high speed footage of a sword being quenched and the resulting curve being "set." It was very dramatic to watch it curve down, then up.


-Xander
 
Notice the edge is well into the cooling phase while the spine is still well in the vapor phase, that's hamon-y stuff right there!
 
What is the material coming off the blade, carbon from the fuel in the furnace? Great picture.
 
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