Furniture
Mortise-and-Tenon Joint
Definition
A traditional woodworking joint where a projecting tenon (a rectangular tongue cut into one piece) fits into a mortise (a rectangular slot cut into another). The mechanical interlock is then glued, pinned, or wedged. It creates a joint that is stronger than the wood itself under lateral loading.
Why it matters for dupe shopping
Mortise-and-tenon joinery is used in all investment-grade furniture frames — Knoll, Herman Miller, Ligne Roset. The alternative is dowel joints (weaker, circular) or butt joints with pocket screws (weakest, used in flat-pack furniture). You can test a joint under the seat rail: gentle lateral pressure on a mortise-and-tenon joint produces no movement; dowel joints creak under the same force.