Banshu Miki Uchihamono



Features of Miki Hardware Saw

A bronze saw about 3500 BC was discovered in Egypt.
In Japan, there were about 20 saws excavated from the Kofun period.
In Miki, there were 3 saw smiths in Kanpo 2 (1742).
The forging technology and sharpening of the saw without any deviation is the ultimate product in pursuit of the toughness of steel.
It has been awarded as the best work of art.

Manufacturing process

1Raw materials

Useing high carbon steel

2Material cutting

Heat the steel to heat (800-900℃),Make a shape while training with a mallet.

3Forging (roughing)

Useing high carbon compounds.


The structure of the steel disordered by forge welding and forging is placed in a furnace heated to 750℃ and slowly cooled to spheroidize the structure.

5Leveling smoothing

Distortion becomes difficult to remove after quenching Therefore, remove most of the distortion before quenching.

6Shaping (immediately)

Shape it with a grinder or the like.

7Neck making

Forging the part that goes into the handle to the base of the blade.

8Neck shaping

Shape the neck with a grinder.

9Blade preparation

Shape the neck and core by pre-heating those.


Work to harden steel by heating it to 780℃ to 800℃, soaking it in water and quenching it.


Heat to 400℃ to make the steel sticky.

12Burning blade leveling

Remove rough distortion.


Polish the surface.

14Material exact matching

Remove smooth distortion before finishing polishing.

15Buff sharpening

Finish polishing.

16Shape adjusting

Shape the peripheral part with a grinder.


Cut the blade.

18Teeth alternation

Blade teeth linning of both faces.

19Top of teeth sharpening

Rub the top of the blade at an angle with a file.


Engrave a trademark, etc.

21Finish distortion removal

Remove the distortion caused by finishing.


Attach the handle.


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