Blade zukuri(shapes)
Japanese sword(Nihonto) are made in a variety style shapes. Shinogi zukuri are the most common one of them.
1)Shinogi-Zukuri
The most general style for TACHI/KATANA and WAKIZASHI (long swords).the bend was added to make it easier to pull the sword out of the sheath, and the ridge was put in the middle of the sword to increase its strength. This was called “shinogi-zukuri”. The blade-edge was cut on the side, and this style became known as the standard for the Japanese sword.
2)Shobu-zukuri
It is like SHINOGI-ZUKURI, but without YOKOTE line
3)Hira-zukuri
The most general style for TANTO
4)KIRIHA-ZUKURI
Usually in the case of the blades without curvature, like Chinese TANG DAO.
5)Unokubi-Zukuri
The
thickness on the back becomes thins as it gets closer towards the
tip, (from 1/3 for katana, from half for Tanto).
6)KANMURI-OTOSHI-ZUKURI
Like Unokubi-Zukuri, but no yokote.
7) KISSAKI-MOROHA-ZUKURI(Kogarasu-maru)
Kissaki-moroha-zukuri
style blade, commonly called "Kogarasu-maru" style. The thick
back becomes double edge towards the tip, a light fast sword.
8)Osoraku zukuri
The KISSAKI part is bigger than the half of the blades length.
Usually in TANTO type.