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By lyuesword | 30 September 2020 | 1 Comments

Different Kinds of Katana Hada

Different Kinds of Katana Hada


Ayasugi Hada. The strength of the hammer blows are controlled during the forging process but, basically, this follows the same Masame Hada.


Itame Hada. Produced by folding the billet in alternating directions during the forging process.

Konuka Hada. This means rice bran. This kind of swords are typically produced and use in the Hizen province


Masame Hada. This is produced when steel billet is repeatedly folded in the same direction. The lines seen on the blades shows stacks of layers produce during the forging process.

 

Matsukawa HadaA matsukawa-hada is either an ô-itame or ô-mokume that comes with thick chikei along the layers of the forging structures and that appears as large burls which remind of the bark (kawa) of a pine tree (matsu), thus the name.



Mokume Hada. This is based on Itame hada using a different hammer blow to produce ‘whorls’.


Muji Hada. This has a very tight pattern that is hard to discern especially for beginners. This is referred to as Jihada without a grain pattern but, the hada is there. It takes a great swordsmith to produce this kind of hada.


Nashiji Hada. This is referred to as Pear Skin. It is the forging and folding process that produces a wood grain pattern on the blade. A common myth told and retold is that of Japanese swords that are folded a thousand times.

 

Shitahara Hada. A Shitahara-hada shows conspicious uzumaki burls along the center of the blade, i.e. along the shinogi-ji or the center of the ji if in hira-zukuri. But these burls might also appear more towards the ha or in an irregular manner, that means as isolated large burls in places.



However, in truth, it takes about 10 to 15 times fold depending on the methods used by the swordsmith. With every fold, the strength of the sword increases.

For those who are buying Nihonto check out the blade. If there is an acid-etched Hamon and bad hada, this is a dead giveaway. This is also a sign of bad hada.



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