Daisuke Nishida Hand forged white #1 steel blank blade Santoku 165mm custom knife making kit

A new hand-forged kitchen knife by Mr. Daisuke Nishida, 2026 model.Through repeated trial and error with the blade tip and heel shapes, and after extensive testing in actual kitchen settings, Mr. Nishida perfected his own unique design. Mr. Nishida named the new shape  “Koharu.”

The core is made of white-1 steel, which combines the highest hardness with excellent sharpenability. It features a traditional ”Kurouchi " black finish and a beautiful, eye-catching “kasumi” finish by hand with rippling patterns. This product is incredibly sharp. Please handle with extreme caution.

Japanese Tansetsu ancient Warikomi techniques
Japanese traditional techniques of knife making from forge welding (the process of hammering and forging steel and soft iron) to finishing, Forged soft iron steel are split with a chisel and core blade of Japanese Yasuki Hagane steel was buried. Mr. Daisuke Nishida is one of the very few blacksmiths who has a skills of  Japanese Tansetsu ancient Warikomi techniques.

Let’s try to make a custom knife with a hand forged blade. To find a knife that perfectly fits your grip is to build it yourself. Please make your self custom knife making with this kit.

The kit is include 1 blade blank, 2 wooden handles and a paper box.
1. wooden blank of Japanese kurokaki persimmon wood
2. ready-made handle blank. *You can set it with ease.
Padoauk octagon wooden Wa handle blank Japanese pagoda tree bolster 140mm

-- Item detail -- approx. size and weight 
Koharu - Santoku double edged knife
Blade length 165mm, Total length 267mm,Blade width 46 to 32 mm, Blade thickness 4.0 to 1.8mm,
Tang length 90 mm, Tang width 11mm, Tang thickness 4 to 1 mm, 103g

-- Material --
*Blade: white 1 steel, base: soft iron, double edged *heat treated and Sharp edged blade
*Black smith, Daisuke Nishida 
*Construction: San Mai, hand-forged in the traditional way
Note: There are some tiny rust and cracks on body steel and tang part, it's not defective. Japanese traditional Kurouchi finish.
A brand new, Made in Japan

-- wood blank detail --
Japanese kurokaki persimmon wood knife handle blank, size 146 x 42 x 26 mm, 113g
*We have already drilled a hole in the wooden blank.
*Natural wood, non coating, it have a tiny scratches.
--
ready-made handle blank
*Material: Padoauk  wood *wood grain varies *natural wood
with Japanese pagoda tree bolster

Size: Total length 140mm, width bottom 26mm to top 22.5mm, thickness bottom 22.0mm to top 18.5mm
Hole size : W 13mm x 4.0mm x Depth 100mm
*Weight: 39 g
*approx.
*Origin: Japan

--
Precautions for use:
The top of the blade is thin and finished to a very sharp angle. Please adjust it to your liking—for example, by resharpening it to a blunter angle or shaving off a small amount from the back of the blade—as needed.

This knife has an extremely sharp blade. Do not use it to cut hard foods such as frozen foods. We recommend using a wooden or soft plastic cutting board.