Chick 'n' Egg Chair

Chick ‘n‘ Egg Chair is a lightweight seating furniture made entirely from corrugated cardboard. It was designed and developed at the Chair of CAAD, ETH Zürich. The form was completely 3D modeled in McNeel Rhino and then further processed in Grasshopper. The parametric setup allows the piece to be rescaled to any desired size, resolution and material strength. Although the chair was initially designed for kids, it can easily be adjusted. So far two versions have been cut and built, one for small children and another one for grown ups. The algorithm to compute the necessary cutting paths is relatively simple. The 3D model is scanned and a basic grid projected onto the surface. This grid is extruded to meet the desired material strength and then intersections and connection slots are determined. The resulting parts are arranged on a flat surface and can be processed on a cutting plotter. This method can be used for any continuous surface and will adjust automatically. The program was then developed further to improve comfort and stability of the chair. This very simple and rulebased design makes the chair a beautiful and affordable piece of furniture that is sustainable and unique in it's appearance.


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