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That explains a lot! Still is a very impressive number.

I think one of the iwasaki razors even has a story of over 1000 attached to it.

On a woodworking board, someone told me they used their tamahagane kamisori every day for a year without rehoning...

The nuisance sharpening is a product of hardness, I am glad you said that. If you had told me that it sharpened easier than white II or swede and lasted 10x as long, I might have felt the need to...

In applications where wear resistance is the issue (like in planing wood), tamahagane is left behind. For that matter, so is white #1. They are considered finishing planes, because they have a small...

Right, back to the blue steel, I think the best method is still to clean it up with a synthetic stone and then give it a whack with the natural stone to remove the harsness from the deep grooves the...

Presume they are white #2 kamisori, where the maker has chosen to leave them fairly soft (60-62 hardness)? I have white II chisels that are claimed at 65, and I have white II chisels that a friend...

White steel is regularly in the RC #65/#66 in top line chisels. Many of the makers claim that their white #1 chisels are 65/66, and their white II chisels are 64/65.

I'd suspect if the...

I think we're getting the blue steel kanetaka and the iwasaki mixed up. At least some of iwasaki's steels have swedish steel and some have White II.

White #1 and White #2 are very close to what...

Thanks to this thread, btw, I ordered an iwasaki kamisori. I think it's contagious.

That's the route I would take. The alumina in the naniwas should "plow the field level" and make a good prep for the wakasa. there is some chromium and tungsten carbides in blue steel, but compared...

If they're super hard, the trouble with blue steel is if you're using a natural hone, it prefers a stone that releases grit. On a razor, a hone that releases grit keeps you from getting a good...