Katana, sword of Japanese samurai warriors (note the ripples drawn by the tempering line or hamon 刃文)

Sharpened katanas, samurai swords

The katana (刀) is a Japanese sword. It is curved and sharpened on one side only, the edge of the blade. Its blade measures over 60 cm (2 shaku; 1 shaku (尺) = 30.303 cm). It is the favorite and symbolic weapon of the samurai, the warrior of medieval Japan.

Unlike its ancestor, the tachi (太刀), its curvature is weaker, adapted to the draw of a standing man, with the cutting edge upwards (conversely, the tachi was used by horsemen, with an appropriate carriage and draw, with the cutting edge downwards).

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- Discover our decision-making tool: What type of katana should I choose? -
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Complex forges

Complex forges use two or three grades of steel ...read more

Maru & quenching line

Differential heat treatment, using clay ...see more

Forge damas (flaky)

Damascus steel is forged by folding the slab ...see more

Maru 1060

The Maru forge is the simplest type of forge used to make katanas...see more

Maru 1050

Maru 1045

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Accessories and maintenance

Practical information

How to care for a katana blade | Practical info #Terressens

Practical info #Terressens

How do I care for a katana blade?

Maintenance of a sword or saber is necessary to prevent oxidation (rust). Used oil must be removed and replaced entirely with a film of new oil.

► See the practical sheet

The magic curve of the katana: when forging becomes science #Terressens

💡 Did you know?

The magic curve of the katana: when forging becomes science

The katana 's famous curvature is not just a matter of style: it's the result of engineering that's as elegant as it is effective. During forging, the master smith applies a thinner layer of clay to the cutting edge than to the back of the blade. During tempering, the cutting edge cools faster, creating a harder structure (martensite), while the back remains softer. This thermal shock causes internal tension... and gives rise to the sword's natural curvature. The result is a perfect balance between cutting power, strength and flexibility.
The katana thus becomes a living weapon, born of fire and intelligence, as deadly as it is harmonious.

CF
cyril fougere ()
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Thank you!
I have already answered however for the team I will repeat myself ... I thank you for the quality of the product, the follow-up as well as the personalization of the engravings and of course the extremely fast delivery time . I received exactly what I wanted with perfect engraving ... Plus I had a lot of choice, even Japanese characters depending on the Blade ... a thousand thanks 🙏 bravo to you !!!!

CL
customer ()
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Perfect RAS
Perfect RAS

CL
customer ()
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I was very pleasantly surprised by...
I was very pleasantly surprised by the seriousness and availability of the team. The follow-up of the order, the answers to questions, and the management of customer relations are really top notch. Thanks again for your professionalism!

CY
cyril ()
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As satisfied as ever with the equipment...
I'm as satisfied as ever with the equipment we received, and the logistics, which were beyond reproach. All in safety.

MA
Manu ()
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The explanations on the site are very...
The explanations on the website are very detailed. Ordering was easy. Shipping and tracking were impeccable. Well done 👍

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