Re: Attempts to Answer
Chris Scholz
>Dave,
point well taken. We are not using any mystery steel that we scraped from the bottom of who-knows-where while the moon was aligned within a certain constellation. It sounds like we went overboard a bit with the mystery thing.
Our raw material is commercial steel, the cutting edge is a Chinese product that does not have a direct Western equivalent. As anybody who as worked with a forge can confirm, it is really the knowhow of the smith that makes a good blade. These guys do absolutely amazing work with just a few hammers and a forge, I have not seen anything like that anywhere else.
Of course there are tangible advantages in forged steel (as opposed to tools cut out of a rolled piece of sheet metal). The hammering and folding of the steel this is described heuristically as "compressing" the steel (as far as I can tell is technically incorrect, you can't "compress" the atomic structure of steel with a hammer). The whole forging, hammering and forging process is more about arresting the movement of dislocations. Google "dislocation slip plane crack propagation" and similar terms and you'll get more information than you might be interested in. A topic of active research with generally little understanding, extremely challenging to present concisely on a website that is not geared toward the scientific community (and I don't know an awful lot about it either).
In any case, I am amazed, and you may or may not agree, what the old swordsmiths knew about steel, just by careful observation and generations of trial and error (it does not bother me that they explained it via mysterious concepts foreign to our thinking today). It seem to me as if some of these 1,000 year old techniques were pretty close to as good as it will ever get.
Thanks also for the note about folded vs. laminated steel, it is the total system that determines the properties of the blade, not only the material of the cutting edge. Maybe a simple graphic will make this clearer. We are working on a ways to demonstrates this better.
Really appreciate your advice, a website is never done, it is a living document, we are working on it...
Now back to polishing blades.
Chris