Joints That Turn Offcuts into Architecture

Building joints developed using metal 3D printing that enable sawmill offcuts to be used as structural members in architecture.

Issue

In conventional construction and sawmilling processes, unutilized timber such as wane-edge lumber and offcuts cannot be cut into standard square sections. Due to their non-standard geometry, most are discarded or processed into low-value wood chips.

Approach

XENCE developed a new architectural joint using metal 3D printing capable of connecting timber members of varying geometries. Topology optimization was applied to the joint geometry to achieve both high structural strength and overall weight reduction.

Result

Successfully demonstrated the integration of 3D printing technology with existing supply chains, converting unutilized timber into viable architectural resources.

Partners

Takenaka Corporation, Shimoda Flange Co., Ltd., Noji Timber Industries Co., Ltd.