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With those new pictures, the omote grind looks straight. From this grinder's perspective, I wonder that grinding the Ura exposed the flaws we can see and the next step would have been to see if it...

Oz, what are your thoughts about the possibility that this may have simply been only partially ground to completion and not a "restore." Once taken to the wheel to grind and those flaws show up in...

As we get to see it on the docudrama TV shows, it seems traditional. Their tradition limits them to a charcoal fire and performing the process as they were handed down. The calculation to drop the...

Without being able to talk to the smith who made the bar of steel, nothing is certain. Asking the person who made the steel would be the most direct and accurate means to answer your question.
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Oroshigane is the selection of tamahagane from various smelts, all gauged by eye and experience, hammered into coin sized pieces, laid up on a steel plate, then welded into a billet that will become...

There are several things going on that are immediately visible.
1. It is folded and welded material. No it cannot be said to be tamahagane. That is the raw smelted material. To build up a...