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What does the kanji on your knife say?

Type the characters chiselled on the blade — or a maker's name in romaji — and get the maker, region, steel, what the knife is for, and how to look after it. Every entry says whether we saw the blade ourselves.

42 marks · 20 makers · 78 products · 11 steels · 19 knife types. Can't type kanji? Browse every mark or send us a photo.
Sharpening a Japanese knife on a whetstone
Sharpening on a Japanese water stone. Photo: hson / Pexels (stock photo, not a Sanjo knife).

Makers we documented in person

吉兼作 / 吉兼久作

Yoshikane Hamono

Sanjo · SKD, Shirogami #2

Seen in person

重房

Shigefusa (Kairo Iizuka)

Sanjo · Shirogami #2

Documented

司作 / 日野浦司

Hinoura Hamono Kobo

Sanjo · Aogami #2, Shirogami #2, Aogami Super

Documented

定明作 / 定明

Nakagawa Shokai (Sadaaki 定明)

Tsubame · Aogami #2, VG10

Seen in person

山人 / 剛剣

Wakui Co. (Kinjiro · Yamabito)

Sanjo · Shirogami #2

Seen in person

剣謙心

Tsurugi Kenshin

Sanjo · Shirogami #2, Aogami #2, SLD, SK carbon steel, VG10

Seen in person

タダフサ / 忠房

Tadafusa (Hocho Kobo Tadafusa)

Sanjo · SLD, Shirogami #2, Aogami #2

Seen in person

哲弘 / 桐生

Kiryu Kogyo (Tetsuhiro)

Sanjo · Aogami Super, Aogami #2, VG10, SG2 / R2

Seen in person

All 20 makers → The Tsubame-Sanjo region →

Three things this site does that a shop page can't

Read the mark, not the marketing

吉金 is the company, 吉兼作 is the blade. 定明作 is chiselled, 定明 is printed. We keep a list of words that look like names but aren't.

Japan price vs your price

Shelf prices in Sanjo next to overseas listings, so you know what the import mark-up really is. See the table.

Steel → stone → care

Every maker page tells you the grit to use and the one rule that keeps that steel alive. Sharpening guide.

Decode the other marks

Construction & finish words

saku · 久作 hisa-saku · 本焼 honyaki · kasumi · 割込 warikomi · 本割込 hon-warikomi · 三枚 san-mai · 鍛造 tanzo · 鍛地 kitaeji · 槌目 tsuchime · 梨地 nashiji · 黒打 kurouchi

Steel marks

白紙2号 Shirogami #2 · 青紙2号 Aogami #2 · 青紙スーパー Aogami Super · SK鋼 SK carbon steel · SKD SKD · SLD SLD · V金10号 VG10 · SG2 / SPG2(粉末ハイス) SG2 / R2 · AUS10 AUS10 · クロモバ18 CROMOVA 18 · モリブデンバナジウム鋼 Molybdenum-vanadium stainless

Steel table with hardness and grit →