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DrNaka
05-15-2011, 12:00 PM
I asked Iwasaki san about "Tamahagane".
He came back with 2 chunks of raw "Tamahagane".

Ancient and New Tamahagane

He said:"The bigger one is Tamahagane made now by The Society for Preservation of Japanese Art Swords ." "It is made every year by Hitachi Metals by old methods."
"The small one is an ancient Tamahagane made by a Tatara master. Not all ancient Tamahagane are top class. Before modern steel came to Japan in Meiji period (1868-1912) there have been many ancient Tatara places. These Tatara places has been named by the masters who made the Tamahagane. I have a stock of excellent and famous masters and I use these for my razors."


I had a chance to make photos of his very special ancient Tamahagane:
Ancient Tamahagene Stock
Near to this stock I saw some other steel:
Hocho Tetsu

I asked what it is.
The answer was it is Hocho Tetsu and it is the mild or soft steel made by the Tatara method. It has been used to make latticework in a window of an old storehouse. The name of these storehouse is "Kura" and you can see it at google picture. Storehouses which have been build before the Meiji period have these Hocho Tetsu.
These can be used as Jigane (clad) or you can enrich it with carbon to make carbon steel and it will be the same as Tamahagane.

I found also a box with the letters The Society for Preservation of Japanese Art Swords Tatara Tamahagane:

The Society for Preservation of Japanese Art Swords Tatara Tamahagane Box
The Tamahagane made now comes in this box to the blacksmith.

When I made the tour of his workshop I found a bigger charcoal furnace; far to big for razors.
It was a furnace to make a Tamahagane bar from the chunk of raw Tamahagane by hammering and folding to get rid of the non melting impurities.

Charcoal Furnace to Purify Tamahagane I asked Iwasaki san and Mizouchi san if they are making Tamahagane razors now.
The answer was yes!
I asked if they are for sale?
The answer was no!
I did not ask further.
I do not know where the new made Tamahagane razors go.
Maybe to museum or to inner circle.

I got a look at old Tamahagane western razors too:

Old Tmahagane Western Razors with Defects These are all Tamahagane razors with defects which did not leave the workshop but too good to go to trash. The steel of these razors can be recycled said Iwasaki san.

I hope my readers have enjoyed to see Tamahagane.

Pictures and links are at my blog:
http://hides-export.blogspot.com/

greendude
05-15-2011, 12:35 PM
what are tamahagane? what are they used for?

DrNaka
05-15-2011, 12:54 PM
what are tamahagane? what are they used for?

http://en.wikipedia.org/wiki/Japanese_swordsmithing#Tamahagane

dafoodee
05-15-2011, 06:56 PM
http://en.wikipedia.org/wiki/Japanese_swordsmithing#Tamahagane
Thanks for the link :cool:

Market Nomad
05-15-2011, 07:09 PM
Murray Carter showed me a couple of straight razors he had made while I was at the Oregon Knife Collector's show. The blades were so thin they could be flexed under light finger pressure on the center of the edge. He told me they were one of the hardest projects he had ever tried and he didn't plan on making anymore! Good razors seem to require skills a level or two above high end kitchen cutlery.

I have never shaved with a straight razor but his made me consider trying.

dough
05-15-2011, 09:33 PM
Dr. Naka your blog is just pure awesome.

some newer members may have missed when Bob H posted step by step pics of the tamahagane process.
if you dont know bob he works for zubeng forge.

here is a link to bob's thread if ya care to see how zubeng makes their tamahagane: http://www.foodieforums.com/vbulletin/showthread.php?7797-Making-Steel-for-Tamahagane-Knives&highlight=zubeng

dafoodee
05-16-2011, 12:33 AM
Dr. Naka your blog is just pure awesome.

+1 - just finished reading, not used to blogs :o

DrNaka
05-16-2011, 06:44 AM
Thank you for reading my blog.

I got some pictures from Sanjo today.

Shigefusa and Yoshikane have finished heat treatment of kitchen knives I ordered for my customers:

Shigefusa
http://2.bp.blogspot.com/-6CVHdPVwuIY/TdDUX1GPhYI/AAAAAAAABCs/pQ4uboNY_pI/s1600/Shigefusa.jpg

Yoshikane
http://2.bp.blogspot.com/-wAyqALhG6fI/TdDVEuaBfBI/AAAAAAAABCw/kRpBitm8Ji4/s1600/Yoshida.jpg

BertMor
05-16-2011, 09:12 AM
Murray Carter showed me a couple of straight razors he had made while I was at the Oregon Knife Collector's show. The blades were so thin they could be flexed under light finger pressure on the center of the edge. He told me they were one of the hardest projects he had ever tried and he didn't plan on making anymore! Good razors seem to require skills a level or two above high end kitchen cutlery.

I have never shaved with a straight razor but his made me consider trying.


Those razors might be too thin. A straight has to have some stiffness otherwise it will flex and you can't control the edge. And that means cuts. I bet Murray didn't do enough research on the different grinds - full hollow, half hollow, quarter hollow and wedge grinds. They are not just hollow ground like a knife with a smooth curve. They have portion that thickens to give it stability. Plus $700-$900 is too much for a first batch