Unless you have experience with traditional boatbuilding or making traditional Japanese sake cups, you may not realize you can join two pieces of wood together--with no glue or sealant--in such a way as to make the joint watertight. Here master woodworker Frank Klausz reveals the trick taught to him by his grandfather, fabricating a helpful tool out of materials you probably have lying around:

It is indeed a clever technique, exploiting the behavior of both wood and water, and this is the first time I've seen it demonstrated.

This must also draw in the water more quickly through Capillary action. Does it create a water lock so only so much water passes through?

My mouth is wide open. So simple.

I’m a lapsed industrial designer. I was born in NYC and figured I’d die there, but a few years ago I abandoned New York to live on a farm in the countryside with my wife. We have six dogs.

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