Japanese Swordsmith Matsuda Tsuguyasu Part 5

[kalagoyu2]

I wished he can make a sword for me. If it's not asking too much.

[NumeralKillerlive]

@FRANC1300 your also paying for a premium

[llew777]

This is an instrument that you cannot buy at Walmart, and good on for that, high quality and tradition,pride in workmanship, Quality lives, This making of this instrument is the highest of quality art work

Thank you for this,  Rob From Canada

[killa2dacore]

This is how you make a sword, by long and precise work , not by mass prudising something, like most sword and knifes companies have tryed to do. I still say that any come close to an original japanese katana.

[joja198]

Thanks for this videos very good

[xZatoichix]

i love the way he applied the clay, the hamon looks awesome

[FRANC1300]

how to know what sword is original,from ppl who made them,or high price,or some certificate?i want to buy me one ,and i am afraid to buy cause maybe its some cheap thing.i saw in store they sell all kind of knifes and swords,and i like katana,so if i buy like 500 euros i dont want to throw the money on crap

[ZdenekJindra]

@FRANC1300 Katanas are being made all over the world. €500 will likely buy a very nice katana with genuine hamon made in USA or Europe. But forget about a true Japanese one, those start at €10000. You are basically paying for no shortcuts being taken in the manufacturing process: Self-made furnace instead of using industrial rods, manual hammering instead of machine hammering, manual grinding instead of a belt sander, natural quartz stones instead of corundum compounds, hand-carved fittings.

[attackoftherandom]

i thought you put the clay everywhere exept the edge so only the edge is hardened. wich is it?

[solnegrolunaroja]

Japanese kitchen knives are also a dream, they are made almost as a little katana, costing several thousand dollars each. The best kitchen knives ever. Thanks for posting.

[daicon76]

which the minimum price of a sword that.1 million of yenes?

[homebuiltindoorplane]

fantastic thanks for sharing!

[godzilla964]

Japan knows how to make the perfect cutting tool.

[Orionblade2003]

They only show him applying the thin layer to the edge - this controls the pattern of the hamon and slightly slows the cooling rate, but there's a much thicker application to the spine of the blade. Also keep in mind the edge is much thinner - it has to be coated so as to not burn through during heating. That's where 90% of the curve comes from as well - the spine cools slowly, allowing the steel to "relax" from face centered to body centered cubic orientation. ;-)

[TheEcnephias]

what's that liquid? a sort of antirust?

[RocketNothing]

Incredible.... The layers on the grain looked amazing. Am I right in thinking any sword made in Japan has to be carbon steel only (no spring, T10 or bainite steel)?

[filo58]

Let me ask. Seems I am little out. He applies the clay on cutting edge, not on the spine of the blade. So during hardening process spine cools faster than cutting edge. This should result in fact, that spine is harder than edge. Here it seems to be reverse: edge is harder than spine. I am really confused. Could someone let me out of this? :)

[ididjaustralia]

very interesting, thanks for putting this up!

[clauxvolta]

recibiendo el alma...

[wavular]

Creating The "Hamon" is an art in itself!

[Jhabarism01]

how does long to make a sword like this?

[enadon1]

usually several months so I hear.

[Shinigami117S]

@Jhabarism01 in japan they limit the swords created by law. only 2 swords a month max. in the era of wars they were making something like 5 swords a month!

[steelstrings1312]

anywhere from 6 to 8 months

[DeeArrVoorhees]

3+ months.

[rabbiteh]

why does he make cuts on the clay layer?

[qwertywxyz]

The pattern creates alternating hard and soft steel creating greater elastic modulus to help dissipate force from the hard cutting edge to the softer body. Keeps the blade from breaking when force is applied.

btw the layering process creates the same force transfer principles as in the Composite bow

[thetanukikaji]

He's not cutting. He's adding strips of clay. this creates ashi.

[enadon1]

it produces lines on the hamon called ashi. if he left it flat the hamon would be less exiting

[Xephon0930]

I wonder where can I get schooled in this art.

[LucasHolland]

japan...

[kusa350]

すばらしい！

[TheJapaneseSword]

Yes, It is basically a clay slurry mixed with grains of polishing stone and charcoal dust etc. It is a different mix depending on the swordsmith. Many have their own additional secret ingredient, or ways of mixing etc.

[UrbanTiger74]

Simply beautiful.

[KageNoAku]

Depends on the blade, the smith, and the process.

Thousands of dollars at minimum, for a traditionally forged blade. I do remember seeing the figure $10k mentioned for a serious, traditionally forged blade. Makes sense, considering the process involved.

[jojomoor]

Yes , months and months of york of heating forging and pollishing to perfection !! Not the slightest error is accepted ! I would pay alot of money to have a sword forged by a real sensei!

[emel60]

you would have to win a lottery =)

[jojomoor]

If i win the million ill let you know and send you one! haha:P

[emel60]

cheer to that, don't waste time waiting a phone call, they will call in the next decade for you to be first on the list =)

[jimmyjamesWang]

a real blade forged in the traditional way is priceless, the money is to make sure that the swordsmith would be in good health and has abundant provisions to continue his work, these are real weapons, used by soldiers and worrier in real battles, the state and the well-being of the sword IS the life of the worrier who wields it, they didnt 'pay' for the sword, the sword is priceless because it almost always determines if they will live through the next battle.

[shane6003PQ]

that said there are shops and kyoto where you can get high quality forged swords for 20 to 50 thousand dollars US, and some of the collectible swords are up to 250 thousand. It's a very costly business. I'll stick to a cheap iaito lol

[TytusTolshemLives]

@jimmyjamesWang What are they so worried about?

[lulzbot]

Japanese smiths use water, not oil or ink, and you don't tend to take a blade much higher than 150 C in the tempering process.

[BigBadBill2323]

In North American smithing you would achieve the effect by heating the piece and quenching so it becomes file hard - very brittle. THEN you reheat, and by eye, discern when your blade is the correct colour, then quench again: called tempering. In Japanese Swordsmithing, the clay resists the heat of the fire, so blade is not equally heated... thicker the clay, the less heat. So when the exposed blade edge reaches the correct heat color, the blade is quenched AND tempered in one step.

[lulzbot]

Wrong. Japanese smiths do temper the blade afterward, otherwise it would crack. The blade bends in the quenching process, and the tempering is absolutely necessary in order to relieve stress in the blade. The blade is first quenched in water, then reheated afterwards to temperatures much lower than the quenching, and then it is plunged into water again.

[BigBadBill2323]

I HATE running to Wiki, but this is interesting, if you recognize "the hardening process" as tempering.

In swordsmithing, hamon from the Japanese "Blade pattern" is a visual effect created on the blade by the hardening process. It is the transition between the region of harder steel of the blade edge and the softer steel of the back of the sword. This difference in hardness is the objective of the process; the appearance is purely a side effect.

[lulzbot]

but that's just it -- the tempering process is NOT the hardening process, most of the hardening happens in the first step

the second step of the heat treatment in Japanese smithing is commonly referred to as tempering, and the sword is heated to a temperature far below that used in the hardening process and put in water again to relieve stress in the blade

it's a two step process, not "quenched and tempered in one step" as you said

[RHOTVETTE777]

would like to see more of the sword making process all the way to the handle and sheath

[HotPocketEXE]

Well now I know why the edge of the blade has that wave pattern on it. Interesting.

[TimmonsCello]

He's shaping the clay mixture that coats the blade until it is heat treated and quenched. Having the clay thicker and thinner in certain spots influences what shape the hamon takes, and it also lets one side of the blade cool faster than the other, changing the structure of the steel. This helps impart the sword's final curve.

[marsgriss]

migoto da na. sugoi!

[ezkljr]

Whats the Gray paste that he applies on the blade for and why does he heat the sword again?

[TheJapaneseSword]

It is an application of clay to control the cooling different rates required of the back and the cutting edge. This causes the steel of the cutting edge to become very hard, so that it can take a razor edge, whilst the back retains some flexibility to absorb the shock of impact when cutting.

[999tyman]

@TheJapaneseSword doesn't it also cause the hamon to later appear during the polishing and sharpening process?

[TheJapaneseSword]

@999tyman Yes, it is this clay application as a part of the quenching process that creates, as well as determining the shape of the hamon. Then the beauty of the hamon is then revealed by the lengthy polishing process using up to 20 different grades of stones.

[spyd3ruu]

and it heats it again so taht the gray clay would stick to the blade. the process is called differential cooling .. and can't be done if the blade is cold :D .. you get the point

[DaveTheSamurai]

Superior craftsmanship!

[mccg]

absolutely beautiful..

[1x93cm]

ike!!!!!! Tsuguyasu-san