Nakahashi manufactures the finest Mortise Chisels in Japan from the finest Japanese steel - each chisel is finished and checked by hand to ensure it is of the highest quality. These Japanese mortice chisels will fit Wadkin, Sedgwick, Multico, Centauro and other popular mortising machines.
Nakahashi Manufacturing was established in 1955, in the middle of Japan’s restoration period. After the war, rebuilding new homes was one of Japans most urgent tasks. At the time, most houses were made from wood and mortising was the most time-consuming process in Japanese construction. The building method required mortice & tenon joints to be done one by one by the hands of a carpenter. In order to quickly rebuild new homes, this mortising process needed to be recreated so it could be done more efficiently and productively.
With this thought in mind, Hisamasa Nakahashi studied and modified the English pattern Clico chisel & bit and created the “Kobayashi Pattern Hollow Square Mortise Chisel & Bit” to suit the working condition and environment of Japan’s carpentry giving higher performance anda better fininsh. The Kobayashi Pattern Hollow Square Mortise Chisel & Bit spread throughout Japan in no time as the tool that changed the mortising process from an artisan skill to a process that could be done by anyone easily. This innovation greatly contributed to pushing Japans' reconstruction forward.
Innovation to Tradition
With the creation of the “Kobayashi Pattern Hollow Square Mortise Chisel & Bit”, mortising for carpentry shifted from a process that requires skills to a process that could be done with precision no matter who did it. This was an innovative change in the mortising culture.
This innovative tool has continuously been refined over the years, and is now an essential tool to the Japanese woodworking industry.
This tool that contributed to the reconstruction of Japan is now being used for repairs of the temples and shrines all over country and is contributing to the preservation of world heritages and Japanese culture.
We think of this as an “innovation” evolving into “tradition”.
An innovative product will spread throughout the world and into the hands of the users, creating a new standard.
And a standard that survives through the change of time becomes a true “tradition”.
Precision Japanese Mortice Chisels & Bit
These mortise chisels are manufactured to the highest standards from the best quality steel in Japan. We have found they out perform all others we have tested.
The auger bit on this type has a point with one cutting spur and a single spiral for efficient chip clearance. The single spur is easy to sharpen and the bits cut evenly and fast, even in the hardwoods. The heat treated chisel body itself is hardened and precision finished by hand with a sharper cutting angle than the traditional English pattern for reduced effort.
N.B. The augers are supplied over length to accommodate different machines and may need cutting with a hacksaw to suit your particular machine.
Longer series set giving 140mm mortise depth
Auger shank = 9.52mm
spare auger drill for long series 12mm mortise chisel
Shank diameter 9.1mm
This metric tool will not fit old fashioned imperial machines without a bespoke collet
Precision Japanese Mortice Chisels & Bit
These mortise chisels are manufactured to the highest standards from the best quality steel in Japan. We have found they out perform all others we have tested.
The auger bit on this type has a point with one cutting spur and a single spiral for efficient chip clearance. The single spur is easy to sharpen and the bits cut evenly and fast, even in the hardwoods. The heat treated chisel body itself is hardened and precision finished by hand with a sharper cutting angle than the traditional English pattern for reduced effort.
N.B. The augers are supplied over length to accommodate different machines and may need cutting with a hacksaw to suit your particular machine.
Chisel shank size 30.1mm
Plunge depth 120mm
Auger shank diameter 12.7mm
Precision Japanese Mortice Chisels & Bit
These mortise chisels are manufactured to the highest standards from the best quality steel in Japan. We have found they out perform all others we have tested.
The auger bit on this type has a point with one cutting spur and a single spiral for efficient chip clearance. The single spur is easy to sharpen and the bits cut evenly and fast, even in the hardwoods. The heat treated chisel body itself is hardened and precision finished by hand with a sharper cutting angle than the traditional English pattern for reduced effort.
N.B. The augers are supplied over length to accommodate different machines and may need cutting with a hacksaw to suit your particular machine.
Chisel shank size 30.1mm
Plunge depth 120mm
Auger shank diameter 12.7mm
A set of 3 Finest Quality Genuine Japanese Mortice Chisels & Bits - Imperial Sizes 1/4, 1/2" & 5/8"
The auger bit on this type has a point with one cutting spur and a single spiral for efficient chip clearance. The single spur is easy to sharpen and the bits cut evenly and fast, even in the hardwoods. The heat treated chisel body itself is hardened and precision finished by hand with a sharper cutting angle than the English pattern for reduced effort.
These mortise chisels are manufactured to the highest standards from the best quality steel in Japan. We have found they out perform all others we have tested.
N.B. The augers are supplied over length to accommodate different machines and may need cutting with a hacksaw to suit your particular machine.
A set of 3 Finest Quality Genuine Japanese Mortice Chisels & Bits - Metric Sizes 6mm, 12mm & 16mm
The auger bit on this type has a point with one cutting spur and a single spiral for efficient chip clearance. The single spur is easy to sharpen and the bits cut evenly and fast, even in the hardwoods. The heat treated chisel body itself is hardened and precision finished by hand with a sharper cutting angle than the English pattern for reduced effort.
These mortise chisels are manufactured to the highest standards from the best quality steel in Japan. We have found they out perform all others we have tested.
N.B. The augers are supplied over length to accommodate different machines and may need cutting with a hacksaw to suit your particular machine.
Nakahashi manufactures the finest Mortise Chisels in Japan from the finest Japanese steel - each chisel is finished and checked by hand to ensure it is of the highest quality. These Japanese mortice chisels will fit Wadkin, Sedgwick, Multico, Centauro and other popular mortising machines.
Nakahashi Manufacturing was established in 1955, in the middle of Japan’s restoration period. After the war, rebuilding new homes was one of Japans most urgent tasks. At the time, most houses were made from wood and mortising was the most time-consuming process in Japanese construction. The building method required mortice & tenon joints to be done one by one by the hands of a carpenter. In order to quickly rebuild new homes, this mortising process needed to be recreated so it could be done more efficiently and productively.
With this thought in mind, Hisamasa Nakahashi studied and modified the English pattern Clico chisel & bit and created the “Kobayashi Pattern Hollow Square Mortise Chisel & Bit” to suit the working condition and environment of Japan’s carpentry giving higher performance anda better fininsh. The Kobayashi Pattern Hollow Square Mortise Chisel & Bit spread throughout Japan in no time as the tool that changed the mortising process from an artisan skill to a process that could be done by anyone easily. This innovation greatly contributed to pushing Japans' reconstruction forward.
Innovation to Tradition
With the creation of the “Kobayashi Pattern Hollow Square Mortise Chisel & Bit”, mortising for carpentry shifted from a process that requires skills to a process that could be done with precision no matter who did it. This was an innovative change in the mortising culture.
This innovative tool has continuously been refined over the years, and is now an essential tool to the Japanese woodworking industry.
This tool that contributed to the reconstruction of Japan is now being used for repairs of the temples and shrines all over country and is contributing to the preservation of world heritages and Japanese culture.
We think of this as an “innovation” evolving into “tradition”.
An innovative product will spread throughout the world and into the hands of the users, creating a new standard.
And a standard that survives through the change of time becomes a true “tradition”. 
Precision Japanese Mortice Chisels & Bit These mortise chisels are manufactured to the highest standards from the best quality steel in Japan. We have found they out perform all others we have tested. The auger bit on this type has a point with one cutting spur and a single spiral for efficient chip clearance. The single spur is easy to sharpen and the bits cut evenly and fast, even in the hardwoods. The heat treated chisel body itself is hardened and precision finished by hand with a sharper cutting angle than the traditional English pattern for reduced effort. N.B. The augers are supplied over length to accommodate different machines and may need cutting with a hacksaw to suit your particular machine. Longer series set giving 140mm mortise depth Auger shank = 9.52mmIn Stock£101.00£121.20As low as £96.96
spare auger drill for mortise chisel Shank diameter 4.3mmLead Time: 54 Days£22.00£26.40
Longer series set giving 140mm mortise depth Shank diameter 6.35mmIn Stock£102.00£122.40As low as £97.92
Precision Japanese Mortice Chisels & Bit These mortise chisels are manufactured to the highest standards from the best quality steel in Japan. We have found they out perform all others we have tested. The auger bit on this type has a point with one cutting spur and a single spiral for efficient chip clearance. The single spur is easy to sharpen and the bits cut evenly and fast, even in the hardwoods. The heat treated chisel body itself is hardened and precision finished by hand with a sharper cutting angle than the traditional English pattern for reduced effort. N.B. The augers are supplied over length to accommodate different machines and may need cutting with a hacksaw to suit your particular machine. Chisel shank size 30.1mm Plunge depth 120mm Auger shank diameter 12.7mmIn Stock£135.00£162.00As low as £129.60
Precision Japanese Mortice Chisels & Bit These mortise chisels are manufactured to the highest standards from the best quality steel in Japan. We have found they out perform all others we have tested. The auger bit on this type has a point with one cutting spur and a single spiral for efficient chip clearance. The single spur is easy to sharpen and the bits cut evenly and fast, even in the hardwoods. The heat treated chisel body itself is hardened and precision finished by hand with a sharper cutting angle than the traditional English pattern for reduced effort. N.B. The augers are supplied over length to accommodate different machines and may need cutting with a hacksaw to suit your particular machine. Chisel shank size 30.1mm Plunge depth 120mm Auger shank diameter 12.7mmIn Stock£223.00£267.60
A set of 3 Finest Quality Genuine Japanese Mortice Chisels & Bits - Imperial Sizes 1/4, 1/2" & 5/8" The auger bit on this type has a point with one cutting spur and a single spiral for efficient chip clearance. The single spur is easy to sharpen and the bits cut evenly and fast, even in the hardwoods. The heat treated chisel body itself is hardened and precision finished by hand with a sharper cutting angle than the English pattern for reduced effort. These mortise chisels are manufactured to the highest standards from the best quality steel in Japan. We have found they out perform all others we have tested. N.B. The augers are supplied over length to accommodate different machines and may need cutting with a hacksaw to suit your particular machine.Lead Time: 113 Days
A set of 3 Finest Quality Genuine Japanese Mortice Chisels & Bits - Metric Sizes 6mm, 12mm & 16mm The auger bit on this type has a point with one cutting spur and a single spiral for efficient chip clearance. The single spur is easy to sharpen and the bits cut evenly and fast, even in the hardwoods. The heat treated chisel body itself is hardened and precision finished by hand with a sharper cutting angle than the English pattern for reduced effort. These mortise chisels are manufactured to the highest standards from the best quality steel in Japan. We have found they out perform all others we have tested. N.B. The augers are supplied over length to accommodate different machines and may need cutting with a hacksaw to suit your particular machine.Lead Time: 32 Days
