The imperfection of the forging, then the perfection of the sharpening and shaping... I am falling in love with this piece of steel, I really hope they go up for sale. It's also interesting to see the different directions of the scratch patterns
These blades did sit for a time before I started any straightening work, I feel the movement is coming from the unique characteristics in the cladding something I have not seen before in this type of sanmai, very interesting blades !
Hello Ivan, I'm enjoying your videos so much. About the imperfection you found in the knife. I think you can understand Spanish, in order to express myself correctly I'll give my opinion in that language. Please apologize me if my assumption was incorrect, I this case I'll try to express myself in English as best as I can. Viendo lo que comentas de la dureza del acero en la zona de calda y las imperfecciones diría que es bastante probable que el herrero pueda haber usado vidrio en la mezcla de la calda. El vidrio de la superficie habrá desaparecido por causa de la forja, pero la del interior queda fijada. El vidrio a la hora de caldar no es mejor ni peor, es mas dificil pero funciona y a este respecto queda bajo responsabilidad del herrero y su habilidad usarlo y como usarlo. También puede ser beneficioso a la hora de resaltar la linea de calda (hamon crei que se dice en Japones) a cuesta de que haga de esta una zona mas dificil de trabajar. En lo que reside peligro es en que queden acumulaciones de vidrio tal y como parece haber sucedido. Estos defectos por su naturaleza son muy duros y por ello muy trabajosos de manejar. Hope this helps. I love your videos, please continue sharing these pueces or art. Greetings for Yuka and for you. Best regards. Jon
Thank you for the details of the explanation. We confirmed with the blacksmith about the hard spot in the Kurouchi, and he said it was hard Urushi peeled off. We couldn't understand Spanish so actually we needed using the google translate but appreciate the in depth comment, it’s always good to hear new points of view and knowledge.
Hello, thank you for your response. I apologize I wrote you in Spanish and the time it has taken me to respond. About the hard spot, I understand Urushi means lacquer. I have never seen any type of lacquer achieving the hardness we see here, indeed I haven't seen anything of organic origin which can affect diamond stones this way. Nevertheless my knowledge about Japanese working materials is very limited. I don't have any reason to discuss what the bladesmith has responded, I think I may be wrong. Sorry to waste your time this way. I order to try to solve my mistake let me explain you something about flux. Nowadays common way to forge weld steels is by using borax. It's the most effective and efficient way. But time ago blacksmiths used mixtures based in sand or only sand. They used different types of sand and mixtures, some of those mixtures used crystal too. They are not common but I still know Spanish blacksmiths who (at least sometimes) still use this method. If the smith is good there uses to be nothing wrong in using them. Depending in how has gone the welding some material can be condemned in the welding. This material uses to be cook (sorry I don't know this term name in English) and the outcome of the sand and/or cristaline condemned flux uses to be hard black spot similar to what you have seen in your blade. Sorry again for the time I have make you spent in this issue. I have a question about the diamond stones you use and sell. I'm grinding M-42 steel at 68 HRC, this steel eats common diamond whetstones very fast. I'm thinking in purchasing a very rough of your stones. Which one would suggest me to buy to perform this work? Thank you for all your patience. Jon
Video and sound quality is horrible but here you have an example of how do blacksmiths use silica based sand. This is a tutorial video of the last Spanish blacksmith school who teach all the aspects of traditional blacksmithing at highest level. They are not elegant nor fancy from today's perspective, but as they say they don't pretend to. The video is in Spanish but you can choose automatically generated English subtitles. th-cam.com/video/ahoKRraVczA/w-d-xo.htmlsi=SJdmEtFCapvGy00_ Regards
2+ days working on 1 blade? Wow. That must be one hell of a sharpening bill for the customer
Absolutely loving this series!
Watching the master at work is inspiring and I’m more than thankful for the information he’s sharing ☺️
Thank you so much !
Awesome Channel !
Love the video series! So much time and work that goes into each knife that most people don't understand.
Thank you so much ! Yes I often am surprised myself at how much ch time is needed to reach the vision I have for each blade.
Ugh, I can’t wait any longer! I’m ready to buy now please! 😂 I wanna make a cutting video with one of these so bad 😅
Thanks ! Hopefully we will get the first group of gyuto out mid January
@@ivanyuka-japan I’ll be ready 🥰
The imperfection of the forging, then the perfection of the sharpening and shaping... I am falling in love with this piece of steel, I really hope they go up for sale.
It's also interesting to see the different directions of the scratch patterns
Thank you so much, there’s a certain wildness to these blades that’s fun and challenges to work, hopefully they will be out mid January next year
Prat 2 ??
Also nice video
Thank you ! This is Part 2 of part 1 in this series
May I ask: any tips on how do to keep the sink from clogging with all of that slurry?
I use double fine mesh in the sink catch, and regularly flush and clean the drain
I see, thanks @@ivanyuka-japan
Did u see a lot of movement because it is a new blade? Would you see less movement if you've them sit for some time?
These blades did sit for a time before I started any straightening work, I feel the movement is coming from the unique characteristics in the cladding something I have not seen before in this type of sanmai, very interesting blades !
Hello Ivan, I'm enjoying your videos so much.
About the imperfection you found in the knife. I think you can understand Spanish, in order to express myself correctly I'll give my opinion in that language. Please apologize me if my assumption was incorrect, I this case I'll try to express myself in English as best as I can.
Viendo lo que comentas de la dureza del acero en la zona de calda y las imperfecciones diría que es bastante probable que el herrero pueda haber usado vidrio en la mezcla de la calda. El vidrio de la superficie habrá desaparecido por causa de la forja, pero la del interior queda fijada.
El vidrio a la hora de caldar no es mejor ni peor, es mas dificil pero funciona y a este respecto queda bajo responsabilidad del herrero y su habilidad usarlo y como usarlo. También puede ser beneficioso a la hora de resaltar la linea de calda (hamon crei que se dice en Japones) a cuesta de que haga de esta una zona mas dificil de trabajar.
En lo que reside peligro es en que queden acumulaciones de vidrio tal y como parece haber sucedido. Estos defectos por su naturaleza son muy duros y por ello muy trabajosos de manejar.
Hope this helps. I love your videos, please continue sharing these pueces or art. Greetings for Yuka and for you.
Best regards.
Jon
Thank you for the details of the explanation. We confirmed with the blacksmith about the hard spot in the Kurouchi, and he said it was hard Urushi peeled off.
We couldn't understand Spanish so actually we needed using the google translate but appreciate the in depth comment, it’s always good to hear new points of view and knowledge.
Hello, thank you for your response. I apologize I wrote you in Spanish and the time it has taken me to respond.
About the hard spot, I understand Urushi means lacquer. I have never seen any type of lacquer achieving the hardness we see here, indeed I haven't seen anything of organic origin which can affect diamond stones this way. Nevertheless my knowledge about Japanese working materials is very limited. I don't have any reason to discuss what the bladesmith has responded, I think I may be wrong. Sorry to waste your time this way.
I order to try to solve my mistake let me explain you something about flux. Nowadays common way to forge weld steels is by using borax. It's the most effective and efficient way. But time ago blacksmiths used mixtures based in sand or only sand. They used different types of sand and mixtures, some of those mixtures used crystal too. They are not common but I still know Spanish blacksmiths who (at least sometimes) still use this method.
If the smith is good there uses to be nothing wrong in using them. Depending in how has gone the welding some material can be condemned in the welding. This material uses to be cook (sorry I don't know this term name in English) and the outcome of the sand and/or cristaline condemned flux uses to be hard black spot similar to what you have seen in your blade.
Sorry again for the time I have make you spent in this issue.
I have a question about the diamond stones you use and sell. I'm grinding M-42 steel at 68 HRC, this steel eats common diamond whetstones very fast. I'm thinking in purchasing a very rough of your stones. Which one would suggest me to buy to perform this work?
Thank you for all your patience.
Jon
Video and sound quality is horrible but here you have an example of how do blacksmiths use silica based sand. This is a tutorial video of the last Spanish blacksmith school who teach all the aspects of traditional blacksmithing at highest level. They are not elegant nor fancy from today's perspective, but as they say they don't pretend to.
The video is in Spanish but you can choose automatically generated English subtitles.
th-cam.com/video/ahoKRraVczA/w-d-xo.htmlsi=SJdmEtFCapvGy00_
Regards
Are you sharpening it as beta-togi method?
No this is hamaguri