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Yeah I know what you mean, there is a great documentary on the history of the samurai sword. In the documentary it said that they understood adding charcoal to the iron made it much stronger but had...

I wasn't saying that folding steel magically makes carbon appear. They would get the steel red hot and roll it in dried plant fibers (like hay) and it burns leaving carbon residue, then they fold the...

An interesting thing I thought I would share about razors made with different steels.

Iron is the base mineral for all types of steel.

Carbon Steel

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