Did you know?
Why is a dovetail joint shaped this way?
A drawer corner can hold a small piece of engineering: the widening tails hook behind their matching pins. Shape becomes a connection.
The flared ends resemble a swallow's tail. They fit into matching spaces in the second board. Their sloping sides stop the parts from simply pulling apart in one direction.
In furniture making, this interlocking shape works together with the glue surfaces. The fit, dimensions and wood also affect how well the joint holds. Its distinctive outline still calls for careful workmanship.
A through dovetail leaves the pattern visible. End grain meets long grain, and the spacing and proportions of the tails become part of the design. Construction becomes a visual detail.
Next time you open a wooden drawer, look at its corner. The furniture may show you exactly how it holds together.
