This blog is a random collection of information, partly in support of my quotations web site. Other topics include wine, military news, economics, history, libertarianism, and other random things which happen to strike my fancy. Backup site is at http://quotulatiousness.blogspot.com/ (if there are no posts showing, hit the backup blog for explanation). Comments have been turned off, as the spam was getting too much to handle. Comments can be emailed to me for posting.

January 29, 2006

How not to dovetail

Among my lesser goals in life is to be able to create a proper dovetail joint. I only say that because my first attempt (today) has not been particularly successful:

Dovetail_1888.jpg

This is what is known as the "pin board" of a dovetail joint. It's the easier, less technically challenging part of creating the joint. As you can see, it's pretty straightforward: mark out the pins, cut out everything that isn't a pin, and Bob's your uncle.

Please don't ask where that expression came from . . . I don't even have a male relative of the previous generation called "Robert", so why I'm using it is already too weird to explore.

Anyway, the idea is that you create the pins first, then use the pins to mark out the dovetails on the matching piece of wood. Here is the completed pin board:

Dovetail_1892.jpg

Looks okay at this resolution, right?

The astute among the readership will notice that I'm not providing a close-up view of this first part of the joint. The matching "tail" portion of the joint shows that I'm still not really clear on the concept of mating parts:

Dovetail_1893.jpg

Still, the strength of the (ancient) joint is apparent when I finally manage to chisel away the excess and put the two pieces together at a 90 degree angle:

Dovetail_1895.jpg

Even with the ugly gaps as highlighted in the photo above, it's still a really strong joint. I'm working with somewhat thicker stock than you'd normally use for a dovetail joint (3/4" rather than 3/8" to 1/2"), but it's already clear to me why this joint has become one of the standard joints for woodworking: even with my sloppy measurement, the joint is tight and effective:

Dovetail_1896.jpg

It's a pain in the butt to create, but the resulting joint is very strong indeed. I may not use hand tools to do this in future, but I'm definitely sold on the dovetail as a solution to the problem of joining wood panels at a 90 degree angle.

Posted by Nicholas at January 29, 2006 10:29 PM
Comments
What do you mean that the dovetail is not in our time / reinactment period? The Mary Rose had several pieces of furniture / wood work on it that were put together with dovetail construction. 1550 - 1560. Do not have the book in front of me right now to give the exact date. And yes, it makes a very good joint. Just takes time to do it. Posted by: Thomas of Cologne at January 30, 2006 04:14 PM
Yes, you're quite right. I'd somehow taken away the wrong impression from the last time the genealogy of the dovetail joint was discussed on the Medieval-Sawdust mailing list. For some reason, I thought the joint had been lost between the Egyptian uses in pre-Roman times and the very late 1500's. Posted by: Nicholas at January 30, 2006 05:22 PM
I believe (I'm away from my resources, so can't find it) that big dovetails were also used earlier for chests and for things like lecterns in churches - only one or two pins. You've done better than my attempts, but I will be inspired by these pictures to grit my teeth and go back and attempt it again. Posted by: Robert Hook at February 1, 2006 02:47 AM
I will be inspired by these pictures to grit my teeth and go back and attempt it again.

I have to admit that I was very happy when I got the dovetails to connect . . . even with all the messing around I did, there is nothing quite like that feeling of accomplishment when the design slides together and holds in place.

I don't know how much hand-cutting of dovetails lies in my woodworking future, but I am still hopeful that the rest of the joints on this particular piece will show clear improvement over this first attempt.

Posted by: Nicholas at February 1, 2006 09:53 AM


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