Japanese Carpentry Scarf Joint Kanawa Tsugi 金輪継 Test Fit
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- čas přidán 18. 05. 2019
- Joining together two massive 7 and 5 meters long larch beams that has Japanese scarf joint Kanawa Tsugi in between them. Using this joint the two joined members have very high structural strength it is positioned parallel the grain instead of perpendicular as it is common in European carpentry. These joints have been cut using Japanese hand tools - ryoba saws, kanna planes and nomi chisels. It takes about 5 hours for experienced carpenter to make this joint on both members. This joint is also common in Europe and in French carpentry it is called the "french lock" or "Trait de jupiter de menuisier" in french. It is hard to say where this joint was originally designed and engineered - in Europe or in Asia/Japan....
Wonderful work!! But my dear northmen, this joint is well known in europe too and has been used for a few hundred years for sure!
In germany where I come from it is known under the names of (translated) "wedged tenon lock" or "french lock".
Non the less, great work!;)
Happy to see you shine light on the Japanese carpentry style. They are amazing craftsmen!
The scarf joint, such beautiful design.
Beautifully done!
this is just genius! respect for what you did here!
Wow, great carpentry! Thumbs up my friend
Wow, that's some impressive work.
great video! from japan.
Thank you.
Just amazing !!!
That's pretty badass...
You guys rocks!
V E R Y !!!! impresive!!!!
Very cool!
Sooo satisfying...
Um excelente trabalho de criatividade, sem dúvida um excelente conteudo, excelentes dicas parabéns e muito sucesso
Incredible, eh? Simple and sturdy.
Very cool
those are such cool shoes
*Beautiful puzzle joint :-)*
Such tricks make the crafts more fun to practice !
That’s so great , imagine how reliable this is in industrial and home applications.
Super Arbeit..........
This should be on one of those Satisfying Videos Channels.
Built to last 🙂
Well, i guess the ancient Japanese just lost another well kept secret! LOL :)
"well kept secret'"? Is this your first time on CZcams?
genus
Интересное соединение для сращивание бруса.
What does this mean: "positioned parallel the grain"? that the halves are overlapped vertically?
I have seen in a video that the old houses were built with this technique, but I still wonder how did they deal with the moths?
Grandfather next films
Tak nasi dziadkowie tez budowali bez użycia gwoździ pozdrawiam
It's an old timber joining in Europe - it's called a French lock so I don't think the Japanese have lost so much.
Good joinery, but isn’t he jumping on the side of beam instead of the top?
Yes he is. This is to show that the joint is strong on the side too. Proving the quality of engineering in the joint.
Actually...this is the proper orientation within this context of the joint as employed within most of the Asian traditions of its application...
@@jakepowell6191 No, that is not the "side" of the joint." Actually...this is the proper orientation within this context of the joint as employed within most of the Asian traditions of its application...
Hi Dan,
I could only see your reply in my "notifications," but could only reply here.
Not to put to sharp a point on my observation, but I am a "master joiner" (aka I'm a designer and working Timberwright professionally) and actually do this for a living, both in restoration of historic frames, and contemporary tradtional designs of such timber archtiecture. I appreciate what you think you are seeing in videos and in the "100+ year old barns." However, I actually design, build and restore those old barns, and what you see in an "old barn" is completely out of context from what is in this video. Similar joinery, to be sure, as they are generically "scarfs" that I'm sure you are recognizing...yet (as I stated) in this video it is being employed within the Japanese (aka Asian) context. As such, that...IS NOT...the side of the joint...as it would be in a Japanese frame. If they are utilizing these timbers (as it appears they are?) as a Rafter plate offset from a post over a brace, then it is being employed in a "European context"...not Japanese...but without seeing the blueprints, or it in the frame, I could not speak for certain how they intend to place the timber, I can only clarify that in Japan, (most often) this joint is oriented differently than you would find it in a Barn or in most (not all) of European applications...
Hope that made my point more clear...
активность...
Though I know nothing about carpentry, I did get a degree in mechanical engineering. I can's see how this attachment gives strength. There are 4 ways to "load' an object, as I recall. . Beam, torsion, column and tension. The only way I see this attachment providing strength is in column loading. Even then, this attachment is suspect to any out of plane forces. Knowledgeable people please comment on my conundrum.
Filmy of grandfather
Dokładnie. Też chcę grandfather
++!!
While I have great admiration & respect for my Japanese woodworking colleagues and their excellent traditions, there is nothing exclusively Japanese about this joint. This exact joint and a great many variants of it have been used in Europe for hundreds of years. It is understandably an impressive bit of woodworking, but also a type of joint every apprentice was expected to learn here in Europe. It's just one of the traditional joints, not much used anymore. There is a tendency to overrate anything 'Japanese' on the web. As for the claim that "Using this joint the two joined members has the same structural strength as the single solid timber" I suspect you would have a hard time finding an engineer agreeing to that. It is however, strong enough, (if used correctly) and that is all that's needed. The hyperbole gets tiresome...
Exactly. The thing about this joint is that is does support both traction and flexion in both directions.
In France it is called "verrou à la française" (french lock).
Exactly right. I also admire Japanese Woodworking, but this joint is known the world over.
T. CZcams opinionist whom passes comment without providing reference materials to back his claim.
“Traite D’Ebenistrie” a book published by Editions Vial. You will see the joint there. I can’t remember, but I’d bet Roubo features it as well.
@@paulmurphy612
Thank you for that, hopefully an english version is available.
"...Using this joint the two joined members has the same structural strength as the single solid timber..."
Wonderful video to share...Thank you!
However...!!!!....I would strongly suggest editing this comment out of your description!!! It is neither accurate and potentially very dangerous for a novice or DIYer who may try to replicate this joint and apply it within the same context of a structure as you have suggested...!!!...as the "Northmen" group are well followed and respected. Your described strength is erroneous and out of context structurally without more validation of your meaning...both in means, and material application.
Respectfully Yours,
j
10/10 agree. Do you recommend orienting this joint as shown in this video or rotated 90 degrees? I've seen it done both ways.
🖒🖒🖒
I didn’t know they did this technique in the Balkan region.
And what do you mean by Balkan region?
@@sranug The school where this was shot is in Latvia.
@@richardpittman6531 That's the point. Latvia is NOT Balkan.
Overly complex for diminishing returns, the very definition of asian engineering and why they were a thousand years behind the west.
Asia wasn't a thousand years behind the west ever. You're a moron.
bashpr0mpt
I agree, a steel beam wood have a much better choice.🤪
The world keeps going the way it is we won't need worry about these tecniques anymore anyway, we will have to use mud and stone. When all the steel is rusting in the ocean and we scortch our lands...
@Special Ed Hiroshima was the result of the Manhattan Project. It was a huge scientific discovery that totally changed the face of warfare. By your logic, had operation paperclip not happened, America would be "1000 years" behind Nazi Germany. Because, we didn't actually discover the nuclear fission we used to develop the two atomic bombs. A German did.
This whole channel is primarily woodworking. Stop sucking the farts from eachothers assholes.
@@Everythingisgoingtobealright .... unless you're a carpenter and you're striving to improve your craft.
While I have great admiration & respect for my Japanese woodworking colleagues and their excellent traditions, there is nothing exclusively Japanese about this joint. This exact joint and a great many variants of it have been used in Europe for hundreds of years. It is understandably an impressive bit of woodworking, but also a type of joint every apprentice was expected to learn here in Europe. It's just one of the traditional joints, not much used anymore. There is a tendency to overrate anything 'Japanese' on the web. As for the claim that "Using this joint the two joined members has the same structural strength as the single solid timber" I suspect you would have a hard time finding an engineer agreeing to that. It is however, strong enough, (if used correctly) and that is all that's needed. The hyperbole gets tiresome...
Except the japanese have been using it for thousands of years
@@matthewbolton4289 : Do you have a source for that claim ?
@@barkebaat theyre traditional pagodas that are thousands of years old. Still standing through many earthquakes... they were built with zero fasteners, Nails, screws, ect...
@@matthewbolton4289 : Your timeline is way off... The Hōryū-ji temple's pagoda is widely acknowledged to be the oldest wooden building existing in the world. This first temple is believed to have been completed by 607. That makes it 1400 years old, not "thousands of years old". It has been extensively taken apart and restored several times. But all this is besides the point. My point was that the joint featured in the video was not specifically Japanese. You seem to be stuck with the usual orientalist view that everything 'Japanese' is very unique, ever so slightly 'magical' and literally thousands of years old. It's tedious.
@@barkebaat oookkkkkkkk tldr. Also dont really give a shit tbth