継手Tsugite Splicing joint study

A project-based approach to studying traditional Japanese woodworking techniques.
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Brian
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Re: 継手Tsugite Splicing joint study

Mon Mar 13, 2017 9:18 am

That will be a fun challenge.
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Chris Hall
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Re: 継手Tsugite Splicing joint study

Mon Mar 13, 2017 4:23 pm

All of Togashi's books are so good.

There are two main ways of cutting that type of joint, which is a challenging one to cut cleanly. One is to layout on the finish dimension sticks and cut. You have to be extremely careful around the entry and exit faces as the wood thins right out there and slight fiber removals can easily mar the finished appearance. You also need to leave a hair of space for the tops of the dovetails in the trenches so that as the joint draws together the dovetail can be pulled upward slightly into tension.

The other way is to start with an oversized stick, equal in thickness to the diagonal measure of the final piece (imagine the finished stick buried within the blank, rotated 45˚ axially in relation to your blank) and cut two parallel dovetail trenches orthogonal to a pair of opposed faces. Then 45˚ cuts are made on all 4 faces, ripping 4 pieces of 45˚ wedge strips off to leave the finished stick behind. Easier to cut the trenches than in the other method, but the sidewalls of the cuts have to be dead clean so as not to show problems at the joint interfaces when the parts are assembled.
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Chris Hall
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Re: 継手Tsugite Splicing joint study

Mon Mar 13, 2017 10:28 pm

m_2010_0708utaguti0002.JPG
m_2010_0708utaguti0002.JPG (16.34 KiB) Viewed 6482 times
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Brian
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Re: 継手Tsugite Splicing joint study

Mon Mar 13, 2017 11:15 pm

That is mind blowing!
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Jon B
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Re: 継手Tsugite Splicing joint study

Tue Mar 14, 2017 8:49 am

It looks like a good first attempt Jacob, keep it up!

-Jon
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Chris Hall
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Re: 継手Tsugite Splicing joint study

Tue Mar 14, 2017 8:46 pm

There is another version of the joint, one dovetail up and one down, however the picture I shared is, well, how to put it without spelling it out: the ribbon communicates a certain message, shall we say...

Another view:
m_2010_0708utaguti0005.JPG
m_2010_0708utaguti0005.JPG (30.77 KiB) Viewed 6448 times
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Brian
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Re: 継手Tsugite Splicing joint study

Tue Mar 14, 2017 11:48 pm

If you do it well and correctly it'll be worth about 1000 views. :lol:
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Chris Hall
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Re: 継手Tsugite Splicing joint study

Wed Mar 15, 2017 12:05 am

Daruma wrote:Watching this guy make a shihō ari tsugi "the right way" makes me think about a starting youtube channel. If I titled it "the wrong way" you think I could get 1,300,000 views.https://www.youtube.com/watch?v=xg1J3tdfUFY
I don't even need to click on that and I know what it is, and jeez, don't get me started.
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Chris Hall
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Re: 継手Tsugite Splicing joint study

Wed Mar 15, 2017 8:55 am

Nice find! I hadn't come across that before.

From what I can see, it looks very much like an adaptation of the Ōtemon splice.

When I get some time I'll try drawing it.
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Chris Hall
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Re: 継手Tsugite Splicing joint study

Wed Mar 15, 2017 10:49 am

Like the dovetailed one, there's also an up/down version of the gooseneck splice, along with a doubled version.

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