Fiaminghi also attended courses in art history held at Da Costa's studio.
[3] After a job at another lithography company in 1940, Fiaminghi worked at Companhia Lithographica Ypiranga from 1941 to 1944, where he saw the lithographer, Lasar Segall, create his Mangue series, which showed the poverty in the slums of Rio de Janeiro.
During this time he joined Grupo Ruptura and created work that is part of the concrete art movement founded by Waldemar Cordeiro.
[6] Fiaminghi did graphic design for posters, illustrating the work of concrete art pioneers Haroldo de Campos, Décio Pignatari, among others.
[5] In the 1960s, Fiaminghi broke with Waldemar Cordeiro and the school of concrete art, and began to explore the use of color, creating works under the term "Corluz," which became the names of many of his exhibition during that time.