seriously injuring yourself while using it. Extreme caution should be used whenever using a blade with such surgical sharpness. Another problem with this sword is that the contemporary models are mass-produced in China and have little of the originals' sharpness or durability. If you can't find an original antique or museum model, then the contemporary cheaper knockoffs are no substitute. Antique katanas are extremely rare and fairly pricey, so the chance of you being able to use one of these beautiful swords during the apocalypse is very slight. If you do end up with one of these amazing weapons, keep in mind that cleaning it soon after killing is very important to prevent blade degradation.
The wakizashi, the shorter sword paired with the katana, was mainly used for ceremonial reasons. It looks like a miniature katana, but would have been allowed to be worn in buildings where a katana was not. The manufacture of the two is not the same, and the quality of most wakizashi is far inferior to most katanas of the time period. This was also the sword a Samurai would use to commit seppuku, or honorable suicide. Before committing seppuku, a Samurai would write a death poem, usually a haiku, and then disembowel himself in front of an audience. This can be an effective shorter sword to use against the undead if you can get your hands on one. The lessened weight and length means that you will have to expend much more physical energy using it to get a similar result, so you should plan accordingly.
The nodachi is similar to the Scottish Claymore but is heavier and much harder to use. Its cumbersome size and weight make it an ill-conceived weapon for most zombie killers. Its rarity also makes it an unlikely choice. If this is your own weapon, which is a rare possibility stateside, then it can be a good, albeit cumbersome, zombie splitter. Like the katana, it is sharpened only on one side. The weight and sharpness make this able to do some considerable damage when used, but it is just that same weight that makes it a fairly poor option as well.
Non-Weapon Blades: Machetes and Woodcutting Saws
A heavy, sturdy knife like a machete is a good possible choice for zombie killing because they are designed for clearing dense brush, and it is less likely to break than most blades. They are generally not particularly sharp, and you will need to work a zombie head over more than once to get it to come off. This is related to its one-handed verses two-handed design. Again, getting this type of weapon lodged in a zombie head is a real possibility. If using one, go for the neck. A few well-placed chops to the neck won't kill the zombie, but it might paralyze it. Constant sharpening is a must for this type of weapon.
Woodcutting saws have a real advantage over a simple chainsaw, which is too small, slow, or light to do effective damage. They are used to cut down whole trees at the base of the trunk, but are stiff, small, hand–held models, like back saws, or are larger mill-like saws attached to the front of a small vehicle. The handheld version is not recommended. While it is fairly sharp (used to saw wood for furniture making), one would have to hold a zombie down to saw their head off. The vehicle version is not recommended because it probably uses an inordinate amount of gasoline, and the zombies would have to get right in front of it to be damaged.
Mêlée Weapons 2: Maces, Bludgeons, and Objects Turned Mêlée Weapons
A bludgeoning weapon is usually a heavy long stick-like object with spikes or chain-based attachments. Generally, their mode of killing involves smashing or demolishing the skull, even if the wearer is in protective headgear. There have been ample sophisticated bludgeoning weapons through history, like the mace or flail, but any heavy, long object that's fairly sturdy can be used to smash a zombie head. Weight of the weapon, as well as