「日本刀ができるまで」四郎國光～刀匠～How samurai swords were made～

日本人の魂ともいえる「日本刀」が、刀匠の手によって作り出される過程を撮影した貴重な映像です。

[@backpainmontagne]

言い方あれだけどあんな出来損ないのハンバーグみたいな形した状態から美しい日本刀に仕上げるの本当にすごいと思う。

[@zuyozuyozuyo1130]

出来損ないのハンバーグは草

[@andreacanova5332]

00

[@kaiba6177]

@@zuyozuyozuyo1130 あの色々飛び出てるボロボロのやつねww

[@zuyozuyozuyo1130]

@@kaiba6177 わかるわーwwwwwww

[@blueheartreef]

自分某山陰県住みですが、自分が住んでる所の隣町でこの出来損ないのハンバーグ作ってます。 日本刀剣保存協会が営んでいるたたら製鉄で年に一度生産される「玉鋼(たまはがね)」です。 ここで生産したハンバーグが日本中の刀匠に提供されるそうです。

[@user-yg6fo5ng8l]

槌を交互にあんなに連続連携して小さな場所に打ち続けるの気の遠くなるくらいの修練がもう見える…本当凄い…

[@sanpoo9972]

そこから「相槌を打つ」という言葉が来てますからね

[@Gebo_Boy]

「とんちんかん」も槌をヘタクソな人が打ったときの音が由来らしいです。上手な人は「とんてんかん」

[@user-jr5xr2qq5z]

皮鉄も心鉄もない、ただ刀の形をしただけの海外の動画を見るとすごくもやっとするんだよね。 急冷で綺麗な形にもっていけるのがすごい。

[@cecil2763]

でも気軽に刀が買えるのは海外っていうね

[@user-mz9yt3qg1j]

日本の歴史を築き上げた刀はほとんどが名前のない刀で 粗悪品って言われるようなものですらこうして一本一本作られてたってのは本当にすごい

[@LITHRONE35]

戦国時代なんかの、特に刀の需要が高かった時代は、大量生産品すなわち数打ちが出回ったと言うけど、コレのどこをどうやったら大量生産なんかできるんだろ？何かの工程を省略するとか？失敗作も安い製品として売るとか？

[@user-rk7kr9in7u]

ここまで丁寧には作らないんじゃないの

[@user-pu7kw1su4o]

雑に作ったとしてもこんだけ手間かかるもの戦場で使い潰しまくったんだもんな…

[@user-gq6ek4rs1r]

適当に作りまくってめっちゃ強いやつだけが名刀として生き残った

[@ama---]

@@user-gq6ek4rs1r なにその蠱毒みたいな

[@dhuo2008]

1番最初にこの工程で刀が作れるって考えた人が凄いわ。

[@pomepomelion]

相州伝始祖の国光ですよ

[@roseguil]

キャプションも丁寧で音も余計な音楽などなく自然の音が入っていて 映像もピンポイントに手元をメインに編集されていたので とても見やすくてわかりやすかったです✨ 何度でも繰り返し見たいです☺️✨

[@user-vi8qh2ub1o]

この後切れるようにする研ぎ師と、持つ用の装飾を付ける人と鞘を作る人もいて 刀作るのも分業であり伝統工芸なんですよね

[@abu-trout]

すごい！ゴールデンウィーク暇なんで作ってみます！

[@user-gz1tn2mb3n]

おうwww頑張れwww

[@gunsoviva1633]

完成と同時に銃刀法違反でタイーホになりません？w

[@Ash-fi4ti]

👮‍♂️

[@user-zl1mo2ry8u]

圧倒的不審者感

[@Wemustbeexecuted]

@@tintin_pro8155 それを言うなら「ふざきんな!!111」だぞ

[@pelseus]

色々な意見はあると思うが、個人的には焼き入れの時に「一度刃の方向に反ってから峰の方向へゆっくり沿っていく」のを実際に見られただけでもとても貴重な映像だと思った。 今迄話だけでしか聞いてなかったからね。まさに「百聞は一見に如かず」。

[@user-bq9et2pd5b]

私もこれには本当に感動しました。 憚りながら金属技術者の端くれです。

[@user-gd1bh1sj9e]

無知な私は『あっ！逆に反ってんじゃん！失敗かよ。』って思いました。 その後ゆっくり反りが出るんですね。驚愕！！

[@user-yq5xg2wb2g]

結構和やかな現場で日本刀が出来上がるのなんかギャップ感じる笑

[@user-nn9vg8hr4p]

ほんとですねw

[@HONEJANAIYO]

先人は科学の知識も未熟なまま、試行錯誤を繰り返し、何百年もの歳月を経て今の形になった事から、日本の歴史の長さと濃さがわかる

[@justinchristoph3725]

I like watching people work who know exactly what they are doing, why they are doing it that way and knowing that they are doing it well. Watching master craftsmen and artisans at work is something I really enjoy.

[@a.itheanswer6502]

廃刀令が出てもう一世紀半 まだこの技術が失われていないことが奇跡だと思う

[@user-xx9iq4tt4o]

素晴らしいですね、いつまでもこの伝統文化を受け継いでいって欲しものです

[@user-sj2qu3bv6f]

あんな曲がってたのに急冷でここまでまっすぐになって反るとは・・・驚きました

[@hosufin]

貴重な動画ありがとう。

[@seijirofto.de2a838]

この動画で一番素晴らしいと思ったのは、炉に火を入れる時に、 金属を冷間で叩いて圧縮した際に発生する熱で火入れをしている事。 伝統技術や芸能における『火入れ』は、一種の神聖な儀式。 神社から、神棚から火をもらうことは一般的でも、この方法は初めて見ました。 動画内の他のツッコミどころについては他の人が述べているのも一緒。 「撮影用なら、電解鉄を真空高周波誘導炉で溶解したものでよくない？」 とも、思わないでもない。玉鋼は 「砂鉄を炭で加熱して、溶かさない温度で還元しつつ、槌で叩いて不純物を絞り出す」 伝統的な直接精錬法だから。 でも現代の刀匠の方々は紛れもない和鉄の専門家。 （中には「金属精錬学」「金属熱力学」を大学で教鞭をふるう方もいる） 短時間の動画では、伝えきれない部分もあるのかなぁ...。

[@masanof_1jz]

海外の人で廃材から刀作ってる人たちもすごいけど、やっぱり本物は別格

[@SyrUsThEVyrUs6187]

To see how swords were traditionally made back than and how they still use the same methods today is awe inspiring. Hope this method never dies, because when it does you'll never see a sword quite like it, ever.

[@H.EL-Othemany]

I think this was just like an act or a demonstration..

[@SyrUsThEVyrUs6187]

@@H.EL-Othemany Either way it'll be a shame when the method dies out.

[@tn1881]

Iron sand in Japan is titano-magnetite iron sand contained in granite weathered by magma, and is called Masasatetsu. Iron sand weathered from basalt is called Akomesatetsu and contains titanium. This iron sand has low phosphorus and sulfur content and contains vanadium. Phosphorus and sulfur are impurities that make steel brittle.Vanadium strengthens steel. Iron ore and coal are high in phosphorus and sulfur and do not contain vanadium. In ancient Japan, slag was called noro, and the process of removing slag was called noro dashi or noro shibori. In tatara ironmaking, the iron sand is semi-molten by keeping the furnace at 1300℃, but only phosphorus, sulfur and impurities and slag are melted and discharged. So impurities and slag are removed from the material tamahagane of katana. It is produced using the same tamahagane material as katana, a high-end kitchen knife made in Japan. The low-temperature reduction method makes the grains of the steel smaller, so the steel has excellent toughness. Vanadium makes the steel malleable and easy to roll, making it easy to fold. By folding, the vanadium is finely dispersed and combined with carbon to form a fine metal structure, so the katana has excellent hardness, abrasion resistance, corrosion resistance, and toughness, and becomes beautiful when sharpened. Hitting the steel with a hammer removes the carbon with a spark, so the carbon content drops to 0.7%, which is suitable for katana. The approximate amount of carbon can be determined by the shape of the spark. By folding, the steel of katana is in a state where austenite and martensite, which have different hardnesses, are dispersed. When a katana is sharpened with a Japanese sharpening stone, the austenite is removed and martensite remains, so the blade becomes like a microscopic saw. That's why Japanese knives sharpen when cutting. China and Mongolia developed blast furnaces earlier than the West, but from around the 10th century they imported katana from Japan and used it in their armies. China also had swords like longswords and rapiers, but based on katana, Qijiadao, wodao, and miaodao were developed. Chinese Ming Dynasty military scholar Mao Yuanyi (1594-1640) “The katana is extremely strong and sharp, and the Chinese sword is no match for the katana.'' British adventurer Sir Edward Michelbourne (1562-1609) “The Japons are not suffered to land in any port in India (Asia) with weapons; being accounted for a people so desperate and daring, that they are feared in all places where they come .” Spanish trader Bernardino de Avila Giron (- after 1619)"The quality of Japanese steel crushes European steel at the first blow." Around 1970, Japanese steel company Hitachi Metals analyzed and applied tatara and tamahagane to develop Yasugi Specialty Steel (yasugi hagane) and built a sponge iron plant. Yasugi Steel has the same properties as katana, so it is hard, impact-resistant, and hard to break. This special steel is used for various purposes such as cutlery steel, high-end kitchen knife material, razor material(Gillette,Schick,Wilkinson razor steel), automobile parts material, automobile engine parts, and aircraft engine parts. Japanese knives and zwilling Japanese knives are made from steels such as Blue Steel (Aogami) and White Steel (Shirogami) based on Yasugi Steel. Around the 6th century, high-quality iron sand could be mined in the Yasugi region, so it became a town of iron manufacturing. Yasugi City is currently producing Yasugi Specialty Steel at the Hitachi Metals factory and exporting it to the world. Steelmaking engineers at the Hitachi Metals plant learn the traditional tatara ironmaking process. In the 14th century, katana craftsmen migrated to Seki City and produced katana in large quantities. Seki City still produces katana and knives. German knife maker zwilling parsed tamahagane for katana material. zwilling manufactures high-end kitchen knives made from Japanese steel in its Japanese factory.

[@suyononano3576]

Terimakasih ilmunya om 🙏

[@eneco1767]

Nice explanation. I wonder why burnt grass is used and what is the function of clay? Thank you!

[@bobbobson4607]

@@eneco1767 It makes a old school flux that helps the forge welding process.

[@tyrionas]

Modern Japanese kitchen knives are made of several steels namely, aogami the blue steel but also shirogami which is less hard but a bit tougher. Also yes some Japanese knives like the yanagiba are mostly used with pull cuts but a lot of other knives like the Nakiri, gyuto or santoku are often used with push cuts so not sure how realistic the micro serations really are, especially because Japanese knives often have a highly polished edge so I don't think it matters much.

[@tn1881]

@@Broody58 Vanadium has been detected in 3rd century ironware, according to a survey of ironware in Japanese archaeological sites. Iron sand contains vanadium and iron ore does not contain vanadium. Therefore, it seems that Japan has been using iron sand as the material for iron making since the 3rd century. Japanese iron sand is iron sand that has been weathered by magma. Since there were many volcanoes in Japan, a lot of iron sand can be collected from the mountains. When soil is poured into a waterway, the soil and iron sand are separated by the specific gravity and iron sand can be collected. This method is called kannanagashi. Since the place that used to be kannanagashi was reused as rice terraces, there are still many rice terraces in Japan, and some are preserved as cultural properties.

[@kightremin]

This video has shown some detail that has never been shown before like the deformation during quenching. Great video, thank you!

[@toressm]

I can watch this all day long. Beautiful and wonderful. A true art form.

[@laserbrain7774]

That was awesome, I love how you can see the quench at the end create the curve of the sword.

[@leftyfourguns]

This is exactly how they would've done it for 1,000 years. Exact same tools and techniques. It's the most authentic and traditional forging process I've seen on KZbin so far. Incredible

[@LentPanic7]

Here’s another one. kzbin.info/www/bejne/nanaiJljgsuNjM0

[@adriennefraschetta5391]

Amazing to see how samurai sword is born!!! Much respect 🙏!!!

[@user-cq5ut7mg5p]

hello!

[@evecat_true_]

KON

[@romanograsnick]

Great, now we now how to do a blade for a samurai sword :D Thank you fot sharing this phenomenal workflow with us, which combines tradition and presente tech.

[@user-qi5uw2dt9j]

手がすげぇ…いかにも職人って感じの手だなかっこいい

[@ritschardt]

Best video i have seen so far shows every step precisely, shockingly hard work though.

[@user-cg3ps8ug1w]

すごいです

[@mauriceholder1386]

True artists, beautiful craftsmanship.

[@user-oc5kd6xx1u]

刀「匠」とはよく言ったものですね。 ため息が出るほど見とれてしまいました。

[@nagilum]

The metal looks so beautiful when it’s shining bright yellow, it’s vulnerable yet it can become anything. A metaphor for something. Literally.

[@SaifAli-rs7mh]

How impressive and unique !! The amount of effort and dedication which spent to creat such a master pice is amazing .Respect to the Japanese sword smith .

[@Mmouse_]

I wonder what they'd be capable of if they had an electric furnace and a power hammer.

[@tamike1957]

The blade would have no soul.

[@StoneTheCr0w]

@@tamike1957 you mean jt won't snap under stress? Sign me up for a soulless blade

[@fabiogasperini4809]

@@tamike1957 Blades have a soul now...

[@outsideiskrrtinsideihurt699]

@@Mmouse_ they’d basically produce the same thing just faster. The Japanese have essentially perfected blade smithing using bloomery steel. kzbin.info/www/bejne/a3qZfoCYq6aKj6s

[@x_x2247]

暗室で焼き入れするのは、鉄の色で温度を判断するため。 しかし、この刀匠は明るいところで焼き入れ、これは賛否両論ありそうだけど、逆に言ったらこの刀匠しかできない熟練の技か、もしくは撮影の為か

[@user-jg4sd6tb9p]

こんな丁寧に作られてるんなら鋼塚さんがブチ切れるのも納得

[@repps3077]

Even with all of today's technology its still amazing to watch skilled craftsmen create things of beauty. Absolutely amazing to watch

[@YukonJack]

It's even more impressive when you take in to account that Japanese steel was actually an inferior steel by many standards. True authentic Japanese swords even made the traditional way today require certain care and maintenance that is not generally found in most modern blades. The fact that they are able to make a formidable blade, albeit with certain downsides, is nothing short of absolutely incredible.

[@joshschneider9766]

Tamahagane isn't inferior. Its high carbon content ore that has to be worked downward in carbon content rather than upwards as with most European ores. Notice theyre barely using flux at all outside the forge weld?

[@joshschneider9766]

I'm really really tired of people saying tamahagane is inferior material. Its metallurgically incorrect tosay. Go ask one.

[@geezer.d.luffy.]

@@joshschneider9766 it's not high carbon content ore it's made from iron sand and the metal is inferior in a way it made for a stronger blade but the metal is more brittle and couldn't hold an edge in battle which is the reason they were constantly in need of sharpening their blades regardless of the metal the durability of a sword comes down to the smith and how many times he wants to fold the metal more layers = more durability

[@outsideiskrrtinsideihurt699]

@@geezer.d.luffy. the whole point of a sword is to cut and you can’t do that without an edge. You really think they bee content with such brittle edges for hundreds of years? In reality they had lots of niku on the blade to compensate for the hardness. Brittleness is not just hardness but shape too. Also more folds does not equal higher durability. If you fold the bullet to much you will lose carbon and have a lower carbon blade, therefore a softer blade and therefore a less durable blade. If more folds = more durability then you’d see swords smiths fold their swords way more than they did historically (in the teens)

[@user-so5cx7lj5f]

服めっちゃ綺麗にしてて尊敬する

[@valentineserra3361]

Merveilleux, leurs vêtements, leur cérémonie avant d'entrer et l'allumage du feu grâce au papier enflammé au contact du fer chauffé par battage. Malgré mon âge, j'irais volontiers faire un stage chez ces artistes.

[@pablodelfin9181]

The posture and hammer control of the striker closest to the camera is amazing

[@felipealvarez1982]

I love the ancient personal safety equipment these men are using.

[@nobs3075]

I enjoyed hearing some of these guys laughing and enjoying themselves; not a frequent sound amongst Japanese professional craftsmen, in my experience. I probably would not have watched the video if I had known I would not see the finished product. This video did not show how a samurai sword is made. It only showed how the samurai blade is made. I would love to see the rest of the build.

[@zeroman8090]

So... Beatiful process. I love it.

[@westjoss6567]

最初の火起こしに度肝を抜かれた

[@jeffpadilla9891]

So impressive to see these men make swords and preserve the tradition.

[@mr.midlifecrisis8547]

What an incredible display of respect, discipline and craftsmanship.

[@ligeringspirit1133]

It needa multiple of people just to create a single sword just imagine muramasa create all of his sword by his own Such a raw power ma guy

[@montanatony5838]

The way the blade formed the curve during the quenching is amazing.

[@AnubisDogman]

I didn't notice that. That's insane.

[@AutoFirePad]

I knew the theory, but it is the first time I see it in real life. It is unbelievable.

[@montanatony5838]

@@AnubisDogman yeah it is..

[@montanatony5838]

@@AutoFirePad I had as well but never seen it happen

[@danielbordeianu5841]

Those lines pressed into that clay is what controls the curve? Marked sword is heated uniformly to that color but during quenching the material under the lines dissipates heat faster than the coated parts... and the side with the base of the triangles radiates it the most... thus contracting asymmetrically and creating the bend? That is... Wait, the blade is already slightly curved just before quenching so... the markings worked already... and in the tank they correct side bends..

[@dpeterson157]

Absolutely fascinating. Where is part 2? I would like to see the completed weapon.

[@CrustyRestorations]

A lifetime of skill and knowledge👍

[@wildstrawberry1989]

今から十数年前に初めて買った鋼包丁が四郎國光。私の管理方法や研ぎ方、使い方が三流だったせいで、曲がったり、柄が少し朽ちているけど今だに最高の切れ味です。一緒の宝物。

[@dougthomson5544]

I can’t stay that clean in a wood shop … amazing!

[@mizu3353]

機械音もなく環境音の中での、等間隔なトンカチの音が心地いい

[@kaisermuto]

まず、刀の材質を作ってから鍛錬する。流し込みとは全く違う精神。

[@wowwwordd3783]

🌈🌈🌈🌈🌈🌈

[@broadcastmyballs]

I would have liked to see the sword finished and polished at the end of the video. I'd like to know how the hamon turned out.

[@3jowan274]

今は美術品だけど 昔はこれで敵を斬ったんだなーって思うと なだか不思議

[@Punix0503]

温度変化によってこんなに分かりやすく鉄が曲がるの初めて見たかもしれない

[@angelaguilar9001]

Todos unos maestros en el arte de la fundición, mis respetos para ellos,un trabajo que ya casi esta extinto,saludos desde Veracruz México

[@OhhhBugger]

Nice to see this without power hammers, belt grinders, welders and no westerner continuously trying to say there is no magic or marvel in the katana. To me, it's pure magic that they figured this all out WITHOUT technology, and complex charts, and lengthy ramblings.

[@fontaine-yamada]

ずっと見てられる。この完成した刀を見てみたい。

[@user-fh3rr9qe8u]

明るい中で焼き入れ云々とか言ってる人も居るが、シャッター音の多さとか外国語での話し声とかガラス張りの焼き入れとか、どう考えても外人向けのパフォーマンスだろ。 薄給の人がほとんどの刀鍛冶が少しでも実入を増やそうとする努力はやめるべきでは無いと思う。 コロナ禍のご時世さらに大変だろうけど、本当に頑張って欲しい。

[@Sofuran_sunipa]

最近見つけたキャベツの千切りをするバイトで使わせてもらってます 切れ味がよくて愛用しています

[@edwardoleyar9825]

I was wowed by the wrists of those two older gentlemen. That's a lifetime of swinging hammers with precision.

[@Felix-nh5pw]

16:43 I love how the blade is bending due differential hardening😮👍

[@user-bi7pm6vs6j]

造り方が職人によって違いが有るんだなぁと思いました。

[@kperandos]

Did they light that tinder paper by heating up that rod through hammering it? That’s a lot of effort and dedication even before the actual forging even begins.

[@johnpartridge7623]

These Men operate with such skill & passion & yet they produce something so beautiful but so deadly at the same time 👍

[@TheTangeriner]

Pretty moving watching the natural man-made process.

[@clarkkent5442]

I cannot read what is written, I'm just a lowly bladesmith self taught by current technology available to me using a propane forge. The art and skill handed down from countless generations to make such an amazing tool and weapon is not lost on me. This was a spiritual experience for me having only watched a small portion of this endeavor. Thank you for the upload.

[@j.lietka9406]

Note when being forged, no power hammers, just arm & hammers!

[@chrisdonahue524]

"This was a spiritual experience..." Please 🙄

[@Benri05]

@@chrisdonahue524 also this video is cgi

[@user-hx1ef8nk2b]

素晴らしいです！ こういう伝統文化は本当に宝だと思います！ いつまでも受け継がれていく事を願うばかりです！ そして14:00辺りの人物がお笑い芸人の土田に見えてしょうがなかったです‪𐤔𐤔‬

[@user-sb5ib9jv2m]

鉄から始まり鉄で終わる。 まさに日本刀。

[@Motionshooter]

am I the only one who finds the rhythmic pinging of the hammer so soothing??

[@dermotshaw5722]

Always amazes me just how much the steel moves in the quench.

[@djou1974]

Muito bom, parabéns pela iniciativa.

[@Kydoz3663]

10:48 They bathed those blades in country style gravy. Now it all makes sense!

[@disturbedsilence76]

Thank god for modern metallurgy. It is nice to see old processes because it is entertaining. Most people romanticizes the idea of the way things used to be made, the old world blacksmiths in a dungeon forging Conan's famous sword. lol I respect the old ways but today we have the best of the best in metals for knife making and it is only getting better.

[@kaecake9575]

Fine gentleman with great craftsmanship. I always love the Japanese arts:) 🗾

[@DEADLOK69]

I could imagine watching Matt and Joe from Dual Survival light a fire from metal. They might have a hard time.

[@patrickb.8485]

This is amazing to watch

[@suwonid]

It is the work of a skilled craftsman.

[@martinrafferty3115]

Love these videos true crafts men awesome

[@shitdevil1991]

Can’t speak this language what so ever but I love the craftsmanship so beautiful

[@reubenmosman9466]

Love this work, so good 👌

[@user-jb4jg3yg3p]

蕎麦打てる爺ちゃんもかっこいいけど刀打てる爺ちゃんもかっこいい

[@alanmcewen6111]

He could put electrics on the bellows, but stays with tradition, love it.

[@SeanCrosser]

The box bellows is a pretty good design already, no need to make it electric.

[@user-zw2vk2zw2l]

いいね👍最高です頑張ってください

[@user-dd7qk6ll8s]

何でもかんでも効率化して機械で叩いて作ってるのも見たけど違うな、やっぱこっちだわ人の手でやってこその世界がある

[@essentialjudge2279]

The secret of the samurai. That was a show that was on about 20 years ago that showed similar scenes of monks mining steel to make samurai swords.

[@bzq271828]

凄い着火方法

[@nikanoru13]

Amazing

[@daniedel6333]

Thank you for letting us watch this. Loved it. BUT put on safety glasses!! I was worried about your eyes.

[@user-tw7zz8br6q]

伝統守るためとは言え、文化庁の設定する条件は刀匠を無くそうとしているとしか思えん

[@user-kd9ih4tx9j]

The good work 👍. Your job is my love.

[@TheSilverSmithsBench1]

❤️👍

[@notozknows]

Whats amazing to me is that they kept their white gentleman's blouses spotless. I would've covered in soot if it was me.

[@andreabernucci2624]

Bellissima lavorazione realizzata con ammirevole maestria!

[@survivinggamer2598]

In the first minute they show them hitting a piece of metal. If you do this right, you can actually heat it to red-hot just by hitting it like that. That's how they light the paper.

[@MrGray-dx8sw]

I would love to see the finished outcome of the art work.

[@supidori.id2k20]

Modern country but still maintain traditional culture very well....👍👍👍👍

[@hlbeovlri23658sz]

先人にも、現代の職人にも、脱帽以外の言葉が見付からない。

[@maurobaraldi5606]

Bello vedere nascere un opera d'arte

[@iloveskateboarding45]

Lighting the paper off of the steel was pretty cool, I gotta say

[@joshuakuehn]

Kind of poetic actually. "The fire that forged this steel was lit from the heat of the Master's first strikes"