Furniture joinery explained: what makes a strong piece

Joinery is how separate pieces of timber become a stable structure. The best joint is not always the most decorative one; it is the method that suits the direction and frequency of the load.

Mortise-and-tenon

A tenon fits into a matching mortise, creating a large glued surface and resistance to racking. It is common in chair frames, table bases and doors.

Dovetails and frame-and-panel

Interlocking dovetails resist being pulled apart, making them useful at drawer corners. Frame-and-panel construction provides a stable outer frame while allowing the inner solid panel to expand and contract.

Modern fittings

Good furniture may use concealed bolts or threaded inserts when it must pass through a narrow home and be assembled in place. The important questions are whether fittings are accessible, replaceable and properly supported.