Tanaka Kama Kogyo is a fourth-generation blacksmith shop in Omura City, Nagasaki Prefecture - a region whose metalworking tradition traces back over 800 years to the Battle of Dannoura, one of the decisive naval battles of feudal Japan. Katsuto Tanaka is the current principal blacksmith, carrying forward generations of forge-welded blade production in a part of Japan less celebrated than Sakai or Echizen but no less serious about its craft.
The 270mm sujihiki is the professional standard slicing length in the Matsubara Blue #2 line; the thicker spine provides enough heft for full-length cuts through whole fish and large roasts. Blue #2 at 62-63 HRC holds a fine slicing edge well and sharpens quickly.
Care Instructions: Blue #2 is a reactive carbon steel - the stainless cladding protects the flanks, but the exposed carbon edge will patina naturally with use. Wipe and dry the blade immediately after every use. Avoid leaving acidic foods on the edge. Hand wash only; never put it in the dishwasher. Apply camellia oil for long-term storage. Sharpen on quality water stones - Blue #2 at 62-63 HRC sharpens easily and rewards good technique. Strop regularly between sharpenings.
Each knife is made by hand so measurements may vary.Blacksmith: Katsuto Tanaka
Workshop: Tanaka Kama Kogyo
Location: Omura City, Nagasaki Prefecture, Japan
Construction: Hammer Forged, San Mai
Edge Steel: Blue #2 Carbon Steel
Cladding: Nashiji Stainless
HRC: 62-63
Finish: Nashiji
Edge Grind: Even (50/50), Double Bevel
Handle: Octagonal Walnut
Ferrule: Black Pakka Wood
Weight: 6.0 oz (172 g)
Blade Length: 272 mm
Total Length: 420 mm
Spine Thickness at Heel: 4 mm
Blade Height: 41 mm
The 270mm sujihiki is the professional standard slicing length in the Matsubara Blue #2 line; the thicker spine provides enough heft for full-length cuts through whole fish and large roasts. Blue #2 at 62-63 HRC holds a fine slicing edge well and sharpens quickly.
Care Instructions: Blue #2 is a reactive carbon steel - the stainless cladding protects the flanks, but the exposed carbon edge will patina naturally with use. Wipe and dry the blade immediately after every use. Avoid leaving acidic foods on the edge. Hand wash only; never put it in the dishwasher. Apply camellia oil for long-term storage. Sharpen on quality water stones - Blue #2 at 62-63 HRC sharpens easily and rewards good technique. Strop regularly between sharpenings.
Each knife is made by hand so measurements may vary.











