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 150mm petty covers the versatile middle ground between a paring knife and a utility knife - long enough for comfortable board work through proteins and produce, compact enough for in-hand trimming and detail work. With a blade length just over 150mm and weighing 2.9 oz, it is well-proportioned for daily utility tasks. Ginsan at 62 HRC sharpens readily and holds a fine edge. Features an octagonal walnut handle and an even, double-bevel grind.
Care Instructions: Ginsan (Silver #3) is a fully stainless steel - low maintenance and resistant to corrosion. Hand wash and dry after each use. Avoid the dishwasher, and use wood or rubber cutting boards. Avoid bones, frozen foods, and hard materials. Sharpen on quality water stones - Ginsan at 62 HRC sharpens more easily than most stainless and takes a fine edge that rivals carbon steel.
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: Ginsan (Silver #3) Stainless Steel
Cladding: Nashiji Stainless
HRC: 62
Finish: Nashiji (Pear Skin)
Edge Grind: Even (50/50), Double Bevel
Handle: Walnut Octagonal
Weight: 2.9 oz (84 g)
Blade Length: 156 mm
Total Length: 280 mm
Spine Thickness at Heel: 3 mm
The 150mm petty covers the versatile middle ground between a paring knife and a utility knife - long enough for comfortable board work through proteins and produce, compact enough for in-hand trimming and detail work. With a blade length just over 150mm and weighing 2.9 oz, it is well-proportioned for daily utility tasks. Ginsan at 62 HRC sharpens readily and holds a fine edge. Features an octagonal walnut handle and an even, double-bevel grind.
Care Instructions: Ginsan (Silver #3) is a fully stainless steel - low maintenance and resistant to corrosion. Hand wash and dry after each use. Avoid the dishwasher, and use wood or rubber cutting boards. Avoid bones, frozen foods, and hard materials. Sharpen on quality water stones - Ginsan at 62 HRC sharpens more easily than most stainless and takes a fine edge that rivals carbon steel.
Each knife is made by hand so measurements may vary.











