More answers to questions about katanas
Today we continue to answer your most common questions about Katanas, with the addition of a couple of questions about the swords of the Night Watchmen, Kimetsu no Yaiba.
How to make a paper katana?
There are many ways to create a paper katana, including origami.
You can find an example of a tutorial to create a cardboard katana here, although it is far from the only one.
They can also create it with thin cardboard, cutting out its shape and using metal or wooden rods between both layers of cardboard to make it more resistant. Preferably locating it at the height of the hamon, and then using paper to give it more strength, always sanding for a better finish. In this way, the edge and the katana itself could be thinner, achieving a slightly more natural effect.
Also, if you are looking for another style of craftsmanship, you can download a papercraft model here. It can be opened with Pepakura, a program that can be installed for free.
How are katanas made?
The traditional katana is forged from a type of Japanese steel, tamahagane, obtained by melting carbon-rich iron sand with charcoal in a traditional furnace, the tatara.
The result is two types of steel: one harder and more brittle, used for the edge, as it retains its sharpness better, and another softer and more flexible, used for the core of the blade, providing flexibility to prevent the sword from breaking in combat.
Both steels are combined through a process of folding and forging, generating an exceptionally strong and functional material.
In the process, the blacksmith heats it to red-hot and repeatedly hammers it, folding it over itself, removing impurities and evenly distributing the carbon, strengthening the blade's structure.
Once the blade is formed, it is tempered by applying a clay mixture to it, with a thinner layer on the edge. Then, it is heated and rapidly cooled in water. The thermal shock creates the temper line, hamon.
Then, a master polisher, togishi, uses a series of sharpening stones of different grit to remove imperfections and perfect its edge, as well as to reveal the hamon and other unique details such as the internal textures of the steel, hada. A long and detailed process that can take weeks, enhancing the sword's functionality and beauty.
This step is considered an art in itself, as each katana has unique characteristics with a personalized approach. Finally, the kissaki, the tip of the katana, is precisely sharpened during polishing and should be particularly acute; it is worked to give it a very detailed finish.
Lastly, the Kashira and the tsuka, which are usually made of wood covered with another material, are placed, and its sheath, saya, is created.
If you would like to take a more detailed look at the forging and parts of katanas, you can do so here.
How to make a katana?
If you want to make a homemade katana with more accessible materials and without using steel, you can opt for various alternative materials depending on the purpose you want to give it (decoration, cosplay, exhibition, etc.)
One of the best options is aluminum, as it would be light and decorative with a more realistic appearance. To do this, the first thing to do is draw the shape of the katana on the aluminum sheet and cut it with a handsaw or a Dremel-type tool, sanding the edges until you get the shape of a blade, without the need to sharpen it.
Cut and carve the handle from wood, drill the center to insert the blade, assemble the blade and handle with strong glue. And then wrap the handle with rope or tape to give it a more realistic look. The option to decorate or paint it is personal.
Another option would be acrylic or transparent plastic. The process is similar to the previous one: draw the shape of the katana on the acrylic, cut it with a saw or a Dremel. Sand the edges until smooth and blade-shaped. Polish the acrylic with fine sandpaper and apply heat with a hairdryer to smooth it. Cut and fix the handle using strong glue. Decorate by wrapping the handle with tape or rope.
Katanas can also be made of wood, by cutting, shaping, and sanding it until it achieves a finish suitable for the desired effect.
For cosplay, there is a wide variety of materials and alternatives that can be found in detailed tutorials. (Here's an example)
And if you want something realistic, you can always resort to making a mold, for example, in compressed sand, and melting metal to make it in that material at home, or through a process closer to the traditional, as you can see in this video.
How to make a wooden katana?
Wooden swords are usually well-crafted, lightweight, and perfect for training as they are used to experience the feel of a professional katana while practicing or learning martial arts with them.
To make a katana, or bokken, the most commonly used wood is oak, making them durable and strong enough for children to play outdoors or adults to train intensely for many years, although bamboo katanas are more common for training.
For people under 165cm tall, the ideal size is about 90cm total length and 25cm handle, which is recommended to be covered with plastic, leather or similar to ensure hand safety. The tips are rounded to avoid causing serious harm to the opponent. Its weight made of oak would be approximately 350g.
If it is not to be used for training, it can be made of pine, fir, or other soft wood for working.
The outline of the katana is drawn on paper or wood, with the typical dimensions of a katana. Using a saw, the wood is cut to this basic shape following the design and carefully carving the curve.
With sandpaper, the edges and surface are smoothed, taking care to remove any splinters and leaving a smooth surface to the touch.
Finally, the tsuka is created, which can be carved directly into the wooden part where it would be, so that it fits comfortably in the hand. If desired, holes can be made to attach string or tape to the grip.
Varnish or paint is applied to give it an aesthetic finish and protect the wood.
If you would like to see the procedure, you can find one of many videos about it at this link.
Who uses katanas?
Currently, katanas are used in various martial arts, for example: Batto-do, Iaido, Kenjutsu, Kendo, Iaijutsu, Tameshigiri, Toyama-Ryu, and Battojutsu, so they are used by some martial artists who practice them.
Who used katanas?
In addition to the legendary samurai, other warriors and groups have used this magnificent sword throughout history. Some used it for combat or duels, while for others it was simply the representation of an honorable position in society.
Among them, we could mention the Shinsengumi (a group made up of samurai), Ninjas, Japanese Riflemen and Soldiers, Feudal Lords, Politicians and representatives of noble families, and even Yakuza, as well as some martial artists who still use them today.
Who makes the katanas in Kimetsu no Yaiba?
Nichirin swords are forged from Scarlet Crimson Ore by the master craftsmen of the Swordsmith Village, whose location is known to only a few people and where ancient secrets about the art of forging are kept.
Their material is extracted from the crimson iron sand of a mountain bathed all year round by sunlight, as it absorbs this energy, making demons vulnerable to them, just as they are to sunlight.
Who makes Tanjiro's katanas?
Hotaru Haganezuka is the eccentric and unsociable swordsmith who forges Tanjiro Kamado's katana. He is extremely detail-oriented and passionate when creating Nichirin swords, focusing completely on this work with total seriousness and able to spend long periods of time making them, which is why he gets annoyed if they are disrespected or broken.
Who created katanas?
Katanas, traditional Japanese swords, were developed in Japan during the Heian period (794-1185) and perfected in later periods. Their creation is not historically attributed to a single person, but rather is the result of centuries of evolution in sword forging and design by Japanese artisans and blacksmiths, among whom Masamune's contribution stands out.
Even so, there is a legend that tells how Amakuni Yasutsuna and his son, Amakura, were the main blacksmiths employed by the Emperor to make swords for his armies. After a battle in which the emperor and the survivors returned with broken swords, this blacksmith asked the gods for help and received divine inspiration in dreams, leading a group of blacksmiths with whom he created the first katanas.
