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Tanto (Japanese Dagger)

Tanto (Japanese Dagger)

Posted by BFDesigns on 4/7/2009
This was a project that I finished last semester but didn't get a chance to document it until now. I have a new respect for the people that make these style of knives & swords because the process is very long, grueling, and must be done completely by hand. There is no machine in the world that can form the blade into the complex cutting device that it is. This project took a week of research on traditional japanese blades, and 3 weeks of non stop work. Ten of those days were spent grinding the blade geometry on an oil stone. Every single part of this knife was made by me from scratch.

The blade itself started out as a file because I didn't have a month to forge it out of the traditional tamahagane steel, but it was taken through the same exact process that you would take a normal blade through after the forging process was complete. After the normalization process the back 2/3 of it was coated in a special clay mixture. It was then heated to critical point (~1500°F) and then plunged into a bucket of water. This is called differential hardening which is how you get these things to sweep upwards in an elegant curve, and gives you a hard, razor sharp edge and a softer shock absorbing spine. It was then tempered in an oil bath.

This thing was a definite endurance trial and I would love to do another! So contact me if you want one of these done custom for you to your specifications. Base price starts at $275.00

Specs:

-Blade:
9.5" long with a 4.5" tang and around a .25" sori (curvature); between 1/8" & 5/32" thick. Barely visible Hamon line. Visible Kissaki (tip differentiation). Nihon-to blade geometry configuration. Convex Moran Edge. Laminated copper/bronze (high phosphorus content) Habaki. The tang is signed with my trademark.

-Koshirae:
Solid red oak construction hilt. Bronze Tsuba with fine silver implants. Bronze Fuchi & Kashira. Sterling silver Menukis with titanium implants & cast in place red CZs. Faux black rayskin scales underneath synthetic black ito (wrap). Brass Seppas. Red oak mekugi.

-Saya:
Solid red oak construction. Black lacquered selectively sanded for aesthetic purposes. Oak Kurikata. Synthetic black sageo.

The stand that the knife is resting on is red oak with black felt in the cradles.

Images
1024 x 381 px  (510 KB)
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1024 x 423 px  (550 KB)
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Exploded View
The knife can easily be disassembled for ease of maintainence.
1024 x 315 px  (401 KB)
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Saya Closeup
1024 x 316 px  (394 KB)
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Tsuba Closeup
417 x 512 px  (189 KB)
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Menuki Closeup
The handle ornaments that also aid with grip. You can barely see the titanium coils.
512 x 336 px  (280 KB)
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Another Menuki Closeup
This is the menuki on the other side of the hilt.
512 x 390 px  (316 KB)
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Tang Signature
When a smith completes a blade, he signs the tang. I signed the blade with my trademark instead of my full name. You can clearly see that it was wrought from a file.
677 x 768 px  (458 KB)
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 User:   BFDesigns  ( ) Contact User 
BFDesigns
Working a material allows you to become the material...

Benjamin Dickey
7760 B Penrose Ave
Elkins Park PA 19027 US
Phone: (610) 295-7437





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