Katana: Sharpest Weapon Ever

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What is a Katana?

Katana is a type of traditional single-edged Japanese sword, around 70-90 cm long, and with a curved blade. Katanas were very popular during the age of samurai (from 12th to 19th century), although they weren't used as much in open warfare as they were in duels, demonstrations, and other civilian purposes. They were often carried in pair with a smaller wakizashi.

Multiple kinds of steel are used in different parts of the katana blade. The traditional forging methods (repeated heating, folding and hammering) and the high quality Japanese steel with a lot of carbon content are the reason why katanas are one of the sharpest, strongest and most flexible edged weapons in the world.

Real katanas are still made in Japan, by using traditional techniques and materials. They can be very expensive and even difficult to buy. There are a number of low quality reproductions available as well, but these are machine-made and only good for show. A low quality reproduction can cost anywhere from $20 to $200. A high quality reproduction, which are heat-treated and can actually be used to cut something, can cost up to $1000 or even more.

Japanese Katana vs a 0.50 Machinegun 

Sword vs bullet - proof that katana is the sharpest weapon ever!

A Japanese katana takes seven shots from a 0.50 caliber machine gun before breaking in half completely. The muzzle velocity is 930 m/s (!) and the bullets are sliced in half by the sword; however, the katana is dented visibly right after the first one.

While good katanas can cut 9 mm bullets fired from a pistol with barely any visible damage (see the other video below), they are no match for a military M2 heavy machine gun.

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9mm Gun vs Katana 

Watch a Japanese katana cut bullets in half with no damage!

9mm Versus Katana

...can a katana blade REALLY cut through a bullet as portrayed in many anime and video games?

Runtime: 135
1329818 views
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curated content from YouTube

 

How a Katana is Made 

The process of making a traditional Japanese "samurai sword".

Nowadays only a few Japanese smiths who have a special license can make the real katanas which they call "shinsakuto". The forging of a Japanese blade typically takes hours or even days and sometimes involves several people. The steel is repeatedly folded, heated and hammered which eliminates the bubbles in the metal and spreads the elements evenly throughout all of the blade, thus increasing it's strength.

A typical Japanese katana has only one edge, which allows them to use the rear of the sword to reinforce the blade. A katana is usually made from several layers of metal which are forge-welded together. The traditional "makuri-gitae" design, for example, has a softer inner core, and hardened metal on the edges.

After the blade is created, it is given to a polisher who uses up to seven different stones to give it a perfect look. The polishing often takes longer than the actual forging, and greatly improves the beauty of the blade.

From there, the blade is then given to a hilt-maker, who creates the grip, the hand guard, and other elements. The sheaths and the hilts are often decorated and ornate.

Cold Steel Katana on Amazon 

Great deal if you're looking for a high quality reproduction.

Cold Steel Double Edged High Quality Japanese Katana

Amazon Price: $699.99 (as of 02/06/2010)Buy Now

This katana you can order online is still only a reproduction, but a high quality one. Cold Steel use only traditional materials in making their katanas. What's unusual about this one is the fact that it's double edged.

Cheap Katana Replica on Amazon 

You won't be able to cut anything with it, but it will look great on your wall.

Last Samurai Japanese Sword Katana Honor w/ Free Stand

Amazon Price: $17.00 (as of 02/06/2010)Buy Now

You won't be able to cut anything with this low quality katana reproduction, but it sure will look great as a decoration on your wall. There is a kanji which means "honor" carved on the scabbard of this sword. It's only 15 bucks, too.

Buy a Katana on eBay 

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Katana Photos on Flickr 

For your viewing pleasure.

Late (119/365) by NomadicLass

Late (119/365)

3 marias by Fredo in (((Stereo)))

3 marias

Armed Street Entertainer in Asakusa by ruisu

Armed Street Enterta...

Brave Child in Asakusa by ruisu

Brave Child in Asaku...

神社の境内 by Sekikos

神社の境内

居合い切り by Sekikos

居合い切り

Replica Katana by Blackriver Images

Replica Katana

My sword hanging off the wall by jon_a_ross

My sword hanging off...

MVI_0897 by unicron1bot

MVI_0897

IMG_0896 by unicron1bot

IMG_0896

IMG_0894 by unicron1bot

IMG_0894

IMG_0895 by unicron1bot

IMG_0895

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by Chadrew

There's something beautiful in the fluid movements of a warrior wielding a katana, don't you think? (more)

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