Chair One

Overview

Chair_One is a stacking chair by Konstantin Grcic for Magis; the product page and the technical sheet read "Konstantin Grcic, 2003". The Family_One catalogue describes a complex geometry, an engineering piece whose shell is built from flat triangular elements set at angles to one another, in the catalogue's comparison like a football, giving a three-dimensional form. This is the version on four legs (Chair_One with legs); the catalogue also shows the same seat on a concrete base.

Construction

The seat is die-cast aluminium, treated with sputtered fluorinated titanium and painted in polyester powder. The legs are anodised aluminium in black (art. SD461, seat painted black) or painted aluminium (art. SD5460). The sheet calls the chair stackable and suitable for outdoor use, the page adds that it is flame-retardant, and a Magis trolley is available.

Specifications

• Dimensions: W 55 x D 59 x H 82 cm (technical sheet drawing, SD461 and SD5460; the height is not labelled on the drawing)
• Colours: black 5130 (anodised legs, black seat), white 5286, blush 5284, mint 5285, purple 5283, red 5085 (painted aluminium)
• Cushions: indoor seat or seat-and-back cushions in expanded polyurethane (class 1IM) covered in fabric or leather (Kvadrat Steelcut Trio, Kvadrat Steelcut 3), and an outdoor polyurethane cushion
• Tests listed: ANSI/BIFMA X5.1-2011 and UNI 10977/2002 level L5 tests

How the shell is made

The Family_One catalogue describes the casting as a matter of seconds: the hot, liquid aluminium is pressed through special channels into the heated form, the tool opens after cooling to release the seating shell, and the excess material is removed and re-melted.

The four-leg chair

On the four-leg version, the legs are black anodised aluminium (SD461) or painted aluminium (SD5460). The sheet lists six colours and cushions for indoor and outdoor use.