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Dogmatic About Dovetail Angles
03/19/2008, 14:10 | Lost Art Press Blog
If you own enough books, it's easy to believe almost anything and yet be certain about almost nothing.
Take dovetails. I've seen this joint cut with a wide variety of slopes during the last 15 years. And every person who cuts this joint has a personal or historical preference about the slope they use.
For some craftsmen, the slope varies simply because they eyeball the layout. Frank Klausz, one of the two living dovetail savants I know, says he cuts his dovetails anywhere between 10° to 15° off the vertical. Tage Frid preferred slopes of "about 10°."
Other well-known dovetailers use marking jigs to lay out the joint, which locks them into particular angles. Rob Cosman, the other living dovetail savant, uses 10° for softwoods and 8.5° for hardwoods.
For the last 15 years I've been cutting dovetails, I've used the angles used by my first instructor: 10° for softwoods and 8.5° for hardwoods, just like Cosman. But for some reason, I've become dissatisfied with the way the joints look when they are visible on a piece of casework.
So I hit the library a few weeks ago, and now my head hurts from the bludgeoning. Dovetails might take their name from a bird, but reading about them is a trip down the rabbit hole.
What the Dead Guys Say
To understand how little there is to understand about dovetails, let's take an abbreviated journey through the literature. I promise to be quick like a bunny.
Charles H. Hayward, the mid-20th century pope of hand-cut joinery, suggests three slopes: Use 12° for coarse work. Use 10° or 7° for decorative dovetails. There is no advice on hardwoods vs. softwoods.
F.E. Hoard and A.W. Marlow, the authors of the 1952 tome "The Cabinetmaker's Treasury," say you should use 15°. Period.
"Audel's Carpenter's Guide," an early 20th century technical manual, says that 7.5° is for an exposed joint and 10° is right for "heavier work." No advice on hardwoods vs. softwoods.
"Modern Practical Joinery" the 1902 book by George Ellis recommends 10° for all joints, as does Paul Hasluck in his 1903 "The Handyman's Book."
So at least among our dearly departed dovetailers, the advice is to use shallow angles for joints that show and steeper angles if your work is coarse, heavy or hidden. Or just to use one angle and be done with it.
At least in my library, the advice on softwoods and hardwoods seems to become more common with modern writing. Percy Blandford, who has been writing about woodworking for a long time, writes in his new book, "The Woodworker's Bible," that any angle between 7.5° and 10° is acceptable. The ideal, he says, is 8.5° for softwoods and 7.5° when joining hardwoods.
My Own Eye
One Wednesday morning I laid out and cut a bunch of these dovetails. I ignored the really shallow angles (6.5° to 8.5°) because I wanted to adopt something more angular. The 10° dovetails looked OK. The 12° dovetails looked better. The 14° tails looked better still. And the 15° looked really good as well. (The photo at the top of this entry shows a 15° dovetail with a bunch of alternatives marked on it.)
But I've some defect in my personality that keeps me from choosing the most extreme position, so I settled on 14°. And it's a good thing, too, because a few days after that, the mindreaders at Lee Valley Tools released a 14° dovetail marker (I really should start wearing my tinfoil hat more). I ordered one ? it seemed to be a sign.
Whatever angle you use for your joint, you can rest easy knowing that someone out there (living or dead) thinks you are doing the right thing ? unless you cut something more than 15°, then you're just nuts (or use a dovetail jig with your router).
? Christopher Schwarz

Early Dovetails
01/19/2008, 17:19 | Norse WoodsmithA question on dovetails on WoodCentral led to a discussion of their history, and one of the posters produced a link to a photo of a box with some of (if not the) earliest examples of dovetails on record:
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| Ancient Roman box, dated from the 2nd or 3rd century, currently located in Limesmuseaum Aalen (German language site) in Baden Württemberg. See the original link (Google translation) to the photo on woodworking.de. |
It's a fascinating piece, I think most would agree. I love this sort of old research... and there's some real sophistication in the design of this box - though I guess sophistication shouldn't be a surprise when you review artworks of the period. Helenistic statues display the foremost sophistication, for example... But I digress
The poster also included an informative link to another German site on Roman woodworking tools I also found very interesting.
This box some fairly sophisticated woodworking - and obviously the dovetails' design is well developed at this point. It's pretty obvious to me that they've been around for (literally) thousands of years... Interesting that the idea of craftsmanship hasn't really changed all that much in all this time, isn't it? There is a legacy to woodworking that goes back hundreds of generations, which is something that is easy to forget in the "we do it so much better now" frame of mind.
It reminds me of some of the items that have been passed down to me..,. One of my most treasured came from the old country with my grandparents - it's a traveling/storage box known as a "koffort":
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| Koffort - an antique Icelandic traveling/storage box that's been in my family for at least 150-200 years. |
This box was originally made in Iceland, and my parents both believe it is at least 150 years old, and was quite possibly much, much older than that. It was handed down to my father from his great grandfather when he was 13 years old... By dad's account, his great grandfather had told him that "it was very old" when he himself had received it from his great-grandfather when he was 13 years old in 1933. If we trace that path, his great grandfather would have been 13 years old in 1868, a difference of 65 years. I don't know where, when, or by who it came into his great-grandfathers possession - but if it was "very old" then, I would guess that makes it at least 50 years older than that, which puts it at 1818 or so - and it could easily be yet older - but I have no documentation or even any oral history beyond what I've told you.
The construction of the box is quite simple and elegant - very similar to a "six board chest", but without any legs and a slightly more involved lid design. The corners are dovetailed, and an iron strap has been added for strength at each corner:
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| Dovetailed corner with iron strap |
I doubt the strap was original to the box - most like it was added some time later. These boxes were heavily used and abused, and traveled with the owner all over creation. Often they would also be used like what you would use a safe for today... The angled "handle" on the side is repeated on the far side and is angled to make the box easier to be packed on the back of a mule, horse, or ox.
Inside the only additional item is a small tray at one end:
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| Interior view |
Looking closely at the tray, you can see it's also dovetailed - and you can see the primitive hinges, which I also believe are not original:
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| Tray at one end is also dovetailed |
The fact this is also dovetailed is important in showing the attention to detail this box was given during it's construction. One also has to remember that when this box was built, Iceland had no real native timber of it's own. Almost all wood came in the form of imports from abroad or, and this is more likely the case for a personal item like this, from driftwood. Logs would follow the current up to the shores of Iceland having started anywhere along the shore from the Caribbean to upper Labrador in Canada. Wood, therefore, was quite precious.
Another similar example I have is a larger version of the koffort, which I guess is called a "kista":
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| Kista - a larger version of the koffort |
This is from mother's side of the family. It's not nearly as old, I believe mom thought it dated to the late 19th or early 20th century. It's a little more crudely made, but still uses dovetails in it's construction:
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| Dovetails on the Kista |
This particular box sat in a dirt floor barn for many years, and the bottom had rotted out of it. Dad repaired it at the same time he refinished the koffort. He did a good job at the restoration, but I'm not so proud of the finishes he chose. But still, I'm proud to have them both here with me.
In my spare time over the last couple of years I've been working on my own version of a koffort. I'll post about it someday when I'm finished, but needless to say that anything I do will pale in comparison when you consider the history of these pieces, which is what I think truly makes them special. I can only hope that, some couple hundred years from now, somebody is marveling over my creation wondering who the craftsman was that made it, why he did, and if he was as proud of his koffort then as I am of owning it now.
History Of Traditional Kudus House
06/26/2007, 11:15 | Antique Knockdown Carved Wood House Kudus is a city in the Central Java, Indonesia, located among Jepara, Demak, Pati, and Purwodadi districts and in the route of Semarang the capital city of Central Java to Surabaya (please see location map). Based on story, Kudus name was from Al-Quds, which mean holy.
Traditional house of Kudus if notice deeply is more and more fabulous since its uniqueness and attractiveness in exterior and interior which full with ornamen that made by highest skill woodcarving artist. Foundation of the existancy of the traditional house of Kudus was full with taste and creation that fashioned in the beautiful forms without broken any religion values. Through the activity of art, there is possibility of adding the atmosphere of the deepest metaphysic reality.


