Oire-Nomi Japanese Hand Made Bench Chisel Set By Ichihiro Ⅱ ②

Just a quick heads-up: the 6mm chisel is not made by Ichihiro.

Smith name: Yamazaki Isamu (1912 ～1987)

Steel: White Steel #1

Blade width: 42/36/30/24/18/15/12/9/6/3mm

Weight: 125/121/118/114/112/102/90/86/70/77g

Manufacture Era: Before 1963

Blade Angles: about 27°

Total length(42/36/30/24/18/15/12/9/6/3): 

160/164/159/164/179/192/182/189/210/198mm

Neck length:  about 45mm

Blade length(42/36/30/24/18/15/12/9/6/3):

15/20/21/25/42/39/42/42/55/48mm

Blade thickness(Blade Bottom/The blade near the bevel): 

42mm(about 7.9mm/7.5mm）; 36mm(about 7.8mm/6.8mm）

30mm(about 7.6mm/6.8mm）; 24mm(about 7.6mm/6.2mm）

18mm(about 7.8mm/5.1mm）; 15mm(about 7.2mm/5.0mm）

12mm(about 7.1mm/4.6mm）; 9mm(about 7.0mm/4.5mm）

6mm(about 6.6mm/4.7mm）; 3mm(about 8.2mm/6.0mm）

Types of wooden handles：Except for the 36mm chisel, which has a replacement white oak handle from the previous owner, all other handles are the original ebony.

Accessories：—

Additional Information:  This is a set of Tsuki ichihiro chisels that accompanied a retired Tokyo carpenter throughout his entire career. The four wider chisels saw the most frequent use. The original 6mm chisel was lost, and the carpenter replaced it with a very nice Shinogi Oire chisel. This set perfectly demonstrates how a set of high-quality chisels, as functional tools, can live out their full lifespan when properly used and maintained.

I have performed a basic sharpening on them: the bevels are sharpened to 1000 grit, and the backs (Ura) are sharpened to around 1000 grit as well. The steel provided excellent feedback during the process; most of the chisels produced continuous, wire-like burrs during sharpening, with a hardness that feels slightly stiffer than the burrs typically produced by Kiyotada chisels.