Mukomachi-Nomi Japanese Hand Made Mortise Chisel By First Generation Masayoshi - 12mm

Smith name:  Kato Yunosuke

Steel: White Steel

Blade width: 12mm

Blade thickness: Blade Bottom(about 16.3mm)，Top of Blade（about 13.4mm）

Manufacture Era: Before 1960

Weight: 233g

Blade Angles: 35°

Total length: 239mm

Neck length:  40mm

Blade length: 80mm

Types of wooden handles：Japanese White Oak（Shirakashi）

Accessories：—

Additional Information: Lightly used, in good condition. It comes from a retired carpenter in the Tokyo area. I did a repair sharpening, bevel to 400 grit, ura to 5000 grit. The chisel is well made and the wooden handle is perfectly installed. 

The chisel is well made, with a straight blade and a working width that gradually transitions from about 11.35 at the front to about 11.10 at the back. In addition, the two sides and top of the blade are concavely treated by hand tool - "sen". Ensures that the chisel can be easily pulled out even when making deep mortises. 

The depth of the "Urasuki" concave gradually increases from the top to the bottom of the blade as shown in the last four pictures.

The wooden handle, ring and Kuchigane are all original. The ring and Kuchigane are all handmade.