Repair a Rusty Japanese Knife over a month

It took me a month just to sharpen the battered Japanese Knife .
I develop various instruments and tools.
Click here for the plan
jsk-koubou.stores.jp/

[@jisakukobo]

If you like the video, please introduce it to your friends and social media ! Please watch with subtitles turned on. 字幕をONにして視聴してください。

[@mikoro88]

Man I just _love_ ALL your jigs, rigs and setups! It's all just _SO_ incredibly clean, and well executed! And always satisfying to watch. 😊 ❤

[@notfeedynotlazy]

Thanks for taking the effort to add captions. 👍 Heads-up, at one point (5:46) the English subtitles are not in English. Heads-up x 2, at several points you make a minor English mistake that wouldn't be worth nitpicking about (since you took the effort to do them to begin with!), but since it changes the meaning I'm bringing it to your atention. When you talk about "dents" I was very confused, as I saw no holes in the edge proper. Then I realized you meant the _pits_ caused by the rust. 😁

[@reynaldoberena2824]

E

[@user-mo5np6lx5h]

Нивхи за месяц до хода рыбы точили ножи и причём вручную. И камни для этого подбирали в речках.

[@user-cj1jn7kx9v]

Пятиминутный ролик растянуть на полчаса... 🤦🤦🤦

[@rjung_ch]

You make the best videos, top 5 for sure! Love the detail and amazing quality of work, doesn't matter what it is, a new build / jig / restoration. 🙏

[@mor8266]

That is truly beautiful work. A knife of this quality deserves the time and effort to restore. You're the greatest.

[@davidcrossley7145]

I really enjoyed watching you bring this rusted old knife back to life.”true craftsmanship excellent “ 👍

[@Tuxedo2680]

A labour of love. Such patience and skill. Kudos to you Mr. Koubou

[@nielslund9359]

I so admire your craftsmanship. Well done!

[@thecalif2914]

Definition of "Hobby": Achieving the least revenue, with the greatest possible effort. A great example of craftsmanship, patience and also respect for the beauty and sharpness that comes out from under the rust!

[@gilbertdelgado6703]

Fabulous workmanship, it is apparent that you are a master craftsman.

[@bobridge5271]

For those who don't know, this is a right-handed knife for fish filleting, called a deba. They are usually made of carbon steel because that can be made sharper, but prone to rust, of course, as seen in this video. Left-handed deba are widely available in Japan, but I am not sure about overseas. If you are left-handed, be sure to get the correct-handed deba ! It is impossible to use a right-handed deb with the left hand, and vice-versa, as it will dig into the fish bones and generally make a big mess.

[@lancemillward1912]

Usually two types of steel welded together. Hard steel for the blade edge and etch up awesome in ferric chloride

[@josephedlin2172]

I’ve never heard of a left / right handed knife - how do they differ?

[@kingsta3174]

@@josephedlin2172 the only have a bevel on one side

[@karttu1]

We be interesting to see how filleting is performed with such a thickness of the blade.

[@zoned1361]

Why is the blade so thick? It seems like it's almost 1 centimeter thick.

[@MASI_forging]

Turned out to become a beautiful knife and you did a great restoring it as well.👏👏

[@robertoortega1801]

You're an extremely gifted artisan. I love your work, I found it very inspirational.

[@advance-heating]

That's a great new handle. Next restoration will involve making a new blade.

[@kimharris7231]

Incredible clean and precise work by a craftsman with immense patience. Painstaking work resulting in a beautiful knife. Superb.

[@talegunner4414]

what a beautiful knife. Great work. You take your time and create a fantastic piece of functional art. I wish I had your patience.

[@EffToyz]

this video is amazing! I never knew you could restore knife in such condition!

[@YiannisPagonis]

Excellent job sir. You deserve a thousand thumbs up! 👍👍👍👍

[@pauljarine]

Incredible! Thank you.

[@michaellee8198]

Beautiful work!

[@DavidSmith-ss1cg]

Exquisite! Thanks for sharing this with us.

[@ShamblerDK]

That is simply beautiful. You're truly an artisan.

[@2030ification]

From an old utility knife to a collector's item. This is just WOW!

[@fonziyo]

You're wrong, the makers mark is gone making the knife worthless

[@metatechhd]

Wow, the craftsmanship on this knife is simply astounding. It's clear that restoring a knife of this caliber requires immense dedication and skill. You truly are a master in your craft, and your attention to detail is commendable. This video of you sharpening your knives for a month is intriguing, and I can't wait to see the incredible results! 🔪✨🔧

[@-danR]

To make the month go by really fast, he chose February.

[@xl000]

can you tell me which part you found the most astouding ? Because it's mostly sanding, and making an oval handle

[@alexma9408]

Самое мутное и скушное видео, что я видел!

[@pin20mentanpin54]

一切の挿入音無しで緊張感たっぷりのコンテンツ作り。ただただ素晴らしい！

[@SiTengoTiempo]

Excellent work. Excellent precision.

[@LaelsonMachadodaSilva]

Jisaku Koubou ... excelente trabalho ! perfeita qualidade ! admiro muito seu cuidado ! Parabéns !!!

[@stefanwesterberg5319]

Awesome restoration! Wow! 😎 Two thumbs- up 👍👍

[@Marcus_Shaw]

Would have liked to see the maker's marks left, perhaps fading the polish to leave the original patina at the top of the blade? All the same, nice job 👍

[@ericfg806]

I agree. I don't understand removing the maker's mark just for a mirror polish.

[@raymondengineering8951]

It said, Made in china 😂

[@tomdrew5608]

You did very well with this, sir.

[@torbjornnilsson5057]

What a fabulous work! You are awesome!

[@UnniKrishnan-wq7ze]

Your works always great. And very interesting to watch.❤

[@AmazingSmart-ngth]

WOW...great ideas 💡 ✨!!! I will definitely use some of these ideas. THANKS 😊

[@scottrose5012]

That was truly magnificent to watch, thank you so much for sharing your fine art with us. You are a true Master of your trade. Domo...

[@mariopisanello65]

Semplicemente meraviglioso. Grande ammirazione. Non solo per questo lavoro, ma per tutti i tuoi lavori.

[@user-xp4xi3nb9n]

Your are the best! The MASTER of precision!!!

[@bradleytuckwell4881]

Beautifully done it looks stunning

[@stevefromlondon9175]

Amazing workmanship it's beautiful the end result Regards Steve UK London

[@edmedlin2936]

I have restored many, many deba knives. Yours is more beautiful by far than any of mine.

[@robertrich1216]

Amazing...such care and skill!!

[@lvttvn9365]

Thanks for your excelence videos , your technique is superb. Great lessons teached and repeatable.

[@phillipzx3754]

Beautiful work.

[@FutureEon]

🔪✨🔧 Absolutely mind-blowing craftsmanship! The level of skill and dedication required to restore a knife of this caliber is truly awe-inspiring. Your attention to detail is exceptional, and it's intriguing to witness your month-long journey of sharpening these knives. I'm eagerly anticipating the incredible results you'll achieve. Keep up the amazing work! Can't wait to see more. ⚒🔥💪

[@SERGEY_Vlasenko]

Perfect job!

[@mirekkuzminski3956]

Awesome work ❤️🌞

[@elito1138]

absolutely incredible

[@tjacksonwoodworker3726]

awesome restoration! I enjoy your videos.

[@SomewhatAbnormal]

Wow, that’s a very thick piece of steel and worth fixing! When restoring a knife I start with rust remover (chemical process), followed by belt grinding (I use an OBM 2x72), then I move on to more refined whetstone work. I find this to be the fastest way to restore.

[@Bob_Adkins]

That blade was so thick it needed a half hour on the 2x72. I have never seen a kitchen blade so thick!

[@binghoward70]

@@Bob_Adkins this knife is for cutting big tunas. It is strong enough to cut thru the rib bones.

[@SomewhatAbnormal]

@@Bob_Adkins I have made a butcher knife that thick but I’ve never seen a chef knife like this!

[@johnmccormick650]

Great restoration ❤

[@weldabar]

Wow what a great find and restoration!

[@TocilarulTimisorean]

Great restoration👏 Maybe for the next awase Deba you end with a Kasumi finish on the bevel. This finish looks better on honyaki blades 😉

[@michaelnorman5640]

Another masterpiece you are amazing and inspiring! Make me want to go sharpen up some overdue chisels and planes that are in need of tuning and just been putting off! 😂

[@stevefromlondon9175]

Outstanding work looks better than new Regards Steve UK London

[@markduggan3451]

That was an amazing restoration of a magical knife.

[@bluejijiikemen5537]

いつもながらの凄腕！兎に角、あなたの作業はどれも隙が無くほれぼれする。この修復の分野もさぞ成功するでしょう。 楽しみにしています。

[@terenceblakely4328]

The thing that impressed me the most was that he found a newspaper to test the sharpness.

[@PapaManitas]

Un cambio espectacular, increible como lo has dejado. Saludos desde España.

[@bramweinreder2346]

This is by far one of the best restaurations I've seen. Too many people only care about the mirror finish but still leave the knife pitted, they don't care about the flatness of the edges or the transitions between them. They attack it with power tools like Philistines without understanding the craft involved or the longevity and usability of the work piece, while you have an obvious love for these things.

[@zippy1981dotnet]

With regards to the pithing, you remove a lot of metal to get rid of pithing. It's not always worth it.

[@amyhund3786]

Die Elektrowerkzeuge mit langsam drehendem Wasserstein führen zu einem exakten Freiwinkel der Schneide. Wie deutlich zu sehen ist bekommt er das freihändig nicht hin.

[@tasmedic]

I think this would have been much quicker and easier with diamond stones like my ATOMO 100, and 400. It'd likely be possible to do 4 knives like this in a month using the right stones to complete the initial reprofiling. Having the sandblasting equipment was a good idea. Wish I had that. I gather that you can get attachments for pressure washes which can draw in blasting sand, but I've not seen one for my Gerni pressure washer. I'm sad that the maker's mark has been permanently removed from this blade. It would have been considerate to etch that back on after the restoration.

[@waltermann779]

Vor paar Monaten habe ich auch so eins restauriert, das war wirklich schwer und mühsam

[@volkangunyeli]

Perfect job master. Very clean. 💯👍👏👏🙌

[@airford13]

very impressive! you got a new follower from this. cant wait to see more!

[@jo-ym7zl]

I love all your videos. You have lots of great ideas and you are so diligent. That sounds awesome. Bravo and thank you for everything you share. あなたのビデオはすべて大好きです。あなたは素晴らしいアイデアをたくさん持っていて、とても勤勉です。それはすごいですね。ブラボー、あなたが共有してくれたすべてに感謝します

[@user-fo5rj4sr1b]

あの錆びた包丁がこんな新品みたいになるなんて凄いですね！見事な仕事でした

[@erroldavis2983]

I should’ve known better, is the perfect guy, with perfect wooden tools, with a perfect results on everything that he does, because he’s the perfect guy in the woodworking business ! I can’t help, but think he’s the perfect man!

[@fioenz]

Magnifique travail, j'ai adoré regarder cette vidéo...

[@chicaborba9178]

Que trabalho lindo . Parabéns ! Brasil

[@phooesnax]

This fellow always pursues excellence!

[@Rodo1946]

Muy buena restauracion, el acero al carbono es sin duda el mejor filo, precisa de muchos cuidados, el acero japones tradicional es al carbon. Me parece que en el proceso de quitar el oxido, tambien se quito las letras, una pena no se hayan recreado. Felicitaciones por el trabajo manual, pero valio la pena.

[@whitelionsilentpride3488]

Amazing job 👏🏻👏🏻👏🏻👏🏻

[@musamor75]

Absolutely superlative job. All my respects. Unfortunately here in France, and in Europe in general, it's very hard to get proper Japanese sharpening stones, especially the very large ones like you use. I was wondering what the white powder you sprinkled on the stone was? You brought back the rusty old knife back to life as a thing of beauty.

[@lightube12]

i think is a polishing compound used both for high shine and sharpen.

[@sights2397]

Absolutely beautiful work! But.. too bad that the signature was lost in the process .. anyways, stunning, love it!

[@margaretragle1337]

Watching that rusted knlfe get a wonderful make over AWESOME.

[@fabriciohernandezlopez849]

un trabajo prefecto y exelente JSK.......impreciosnante,,,,,,,,,,,bendiciones-------

[@Sparky_D]

This video has come just as I've been looking to sharpen some of my knives. As always, you've done an amazing job.

[@james-jq8sk]

That's a very nice sharpening set-up with the blue container...

[@udoburmester5733]

Great and fascinating work, no artwork!

[@justtim9767]

Beautiful.

[@viorsa8200]

Gran trabajo maestro, pero es un vídeo muy largo, lo ideal serian dos partes de 15 minutos máximo, gracias por compartir sus conocimientos y experiencias, un cordial saludo y por supuesto un merecido like desde Narón (Galicia)👍🤓😜

[@Ricardo-Royco]

Tres tres beau boulot ! Félicitations

[@BRICOLAJELISTO]

Muy buen trabajo y excelente acabado.

[@thomasstreich6564]

Great restoration! Very nice piece of steel you have saved their. But one thing. Don't use brass on a knife if you want too use it. It is the first thing that will go unpleasant till time if you don't polish it regular. I Use titanium or stainless steal instead of Brass. But that is also that i like silver more than gold looks. But great save of a tool for cooks.

[@warrenhunt5556]

G'day and Hajimemashite JSK-koubou san, Your craftmanship and passion for what do, has my complete and humble admiration to the meaning of perfection. BRAVO ZULU mate. Hooroo and tsugi no bedeo made!

[@user-qr7xz4dl4s]

研ぐ、砥ぐ、磨ぐ 同じトグでも色々な種類と方法が有ります TOGUって奥が深いですよね。

[@andrzejporeda7281]

Przepiękne jest ten cały japoński nuż odrestaurowany pozdrawiam twórcę tego filmiku serdecznie 👍👍👍👍👍

[@kleckerklotz9620]

Unconventional, yet creative way. I like it.

[@kalaipaa]

Amazing and very patient work!!! Joozu desu ne!!!

[@renatoferreiralima6931]

Amazing!!!!

[@user-qu9es7vt9h]

まさかこの包丁自体も鍛冶屋もこんなになるまで復元＋αしてもらえるとは、思いもよらなかったでしょうなぁ…。 取り敢えず、両者共本望であろうことは間違いないでしょう。👍👏

[@lexvane3494]

again, very nice craftsmenship

[@tasmedic]

Nice to have the sandblasting gear, saves a lot of time. I'd have set out with coarse sandpaper to get all the crap off this, then to my ATOMO 100 diamond stone, to take out the large pits on the bevel and re profile the knife. I wouldn't bother much with the steel which is not part of the working bevel and edge. Diamond stones like the Atomo just love refurbishing knives like this, and they save many hours messing about with standard stones. It shouldn't take a month to do this work.

[@plunder1956]

My first thought was: At least it has a long robust Tang. You can do almost anything, but if the Tang is bad, it's almost a waste of time. This is rusty but thick.

[@kefwals8722]

Agreed your tang quality can make or break the show. As a child the baseball team would have pizza parties hosted by a different parents home. And the lower middle class parents would provide orange tang possibly grape which was equally acceptable. Then we'd go to a more upperclass parents home a different week and they would put out somehing crazy like pineapple or horchatas flavor tang which was as you say just a waste of time. It wasn't until I was saying 16 or 17 until I was to discover Wu-Tang and I was really able to start making sense of the world. In the end It always comes down to Tang quality when deciding whether something's worth doing or not

[@WGARES]

The knife that was used for the restoration had a brand, you can find out who the master or the manufactory that made it.

[@MrTerrymiff]

It had a brand but he ground it off.

[@sittingstill3578]

2:21 - right after the sandblasting it’s visible. 2:56 is even more clear.

[@xMiRox]

Sadly, the knife lost all the info about who made it… I don’t understand why he ground it off ☹️

[@raymondengineering8951]

He ground it off because it said, Made in china 😂

[@jacobenard2188]

Very nice! Spitefully are the disappeared Japanese characters on the blade. Furthermore excellent job.

[@joso5554]

Beautiful result especially knowing the starting point. The quality of this blade definitely deserved the effort to bring it back to life. A couple remarks, though : - the handle seems slightly too long and would, in my opinion, be nicer with a darker finish. - the knife should not be mirror polished on the flat side nor especially on the bevel, as these are areas where the sharpening takes place. Maintaining the knife sharpness will lead to destroying this mirror finish anyway. If you intend to use the knife.

[@WimVeen]

You did a great job. Looks wonderful!

[@roromanche7767]

Très beau travail !

[@johnnydingo8680]

Nicely sharpened 😊👍

[@Inventor102usa]

Knife sharpener master. Thank you ☺☺☺

[@leslienixon9274]

Beautiful!

[@user-qy8dl2ev9s]

Los mejores referente a la elaboración de cuchillos ( los japoneses). Toda una obra de arte la restauración de este cuchillo 😮. La dedicación y paciencia da como resultado éste final asombroso

[@jisakukobo]

Me alegro que hayas comentado. Hago varios videos de manualidades, así que suscríbete a mi canal. gracias

[@juanluisruizalconero7586]

Wau,😮 autentico espejo❤, pero se borraron las letras originales del creador del cuchillo, asi todo es posible que invirtieras mas de un mes en dejar el deba tan impecable. Un trabajo impresionante🎉🎉🎉❤

[@1954JDR]

Beautiful knife.👍👍

[@user-jp9js9th8o]

nice work...

[@kevintoye952]

Great job.