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The Arco floor lamp, designed by Achille and Pier Giacomo Castiglioni in 1962.

Achille Castiglioni

Achille Castiglioni combined architecture, exhibition design and industrial objects, often in close collaboration with his brother Pier Giacomo. Arco and Mezzadro show their shared authorship; after 1968, Achille continued his practice and taught design in Turin and Milan.

Milan and architecture

Achille Castiglioni was born in Milan in 1918 and graduated in architecture from the Politecnico di Milano in 1944. His training led into a practice spanning industrial design, exhibitions and architecture. He was Italian and lived from 1918 to 2002.1,2

A shared studio, then a solo practice

From 1945, Achille worked with his brother Pier Giacomo in the Milan studio; their collaboration continued until Pier Giacomo’s death in 1968. Achille Castiglioni experimented with industrial products with his brothers from 1940 and continued independently at the studio through 2002.1

Arco: a light from above without a ceiling fixture

Designed with Pier Giacomo in 1962, Arco addresses the need to illuminate a table without fixing a light to the ceiling. A steel arch rises from a marble base and projects the light source outward over the table.3

Mezzadro and the shared authorship

Achille and Pier Giacomo Castiglioni designed Mezzadro in 1957. Zanotta brought the seat into production later, carrying their shared design into a manufactured object.4,5

Teaching through objects

Castiglioni taught artistic design for industry at the Politecnico di Torino from 1969 to 1980, then industrial design at the Politecnico di Milano from 1980 to 1993. The foundation’s account of his studio and teaching highlights the close study of ordinary objects as part of design education.5,6

Two solutions by two brothers

Arco and Mezzadro make the shared authorship of Achille and Pier Giacomo Castiglioni visible through two different problems. Arco projects a light over a table without a ceiling suspension: the long metal curve carries the source away from a marble counterweight. Mezzadro takes the form of a sprung tractor seat into a domestic stool. The current Mezzadro has a chromed steel stem and a steamed-beech base. The lamp directs light across space. The stool changes the context of an existing seat form. Neither should be presented as Achille’s solo invention, and neither is explained by a generic “playful design” caption.7,8

WorkRecognizable partProblem made visible
Arco, 1962Marble base and arched stemLight reaches a table without a ceiling fixing
Mezzadro, designed 1957Sprung metal seat, steel stem, wood baseAn agricultural seat form enters the home
7,8

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