KUMU KUMU CHAIR by Wakana Nagayama
Nippon Institute of Technology | Section of Living Design | Department of Architecture
One of the timber construction methods, the " halving joint" is a simple way of assembling by cutting out and inserting each member into the other. I thought that by repeating this assembly method, it would be possible to assemble furniture and spaces in three dimensions as a collection of members, and I tried to propose a new composition and shape that develops from parts to a whole using halving joint.
Two pieces of bent plywood are glued together and processed into three types of curved surfaces to create the components that become the "legs and seat" and the "seat and backrest." By connecting these in the width direction with a halving joint, the three types of curved surfaces support each other, forming a chair. By devising the composition of the members and the depth of the halving joint, I was able to reduce the bending of the seat, deformation in the connection direction, the spread of the legs, and the overall swaying. I expressed the new possibilities of halving joint through the development of curved surfaces in the form of a chair.
words: Wakana Nagayama
CREDIT
title: kumu kumu chair
student name: Wakana Nagayama
school: Nippon Institute of Technology, Section of Living Design, Department of Architecture
year: 2025
category: Furniture Design
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