His second great invention came in 1836, when he produced a pantograph-like machine to reproduce sculptures in different scales and materials. In 1838, he started a company together with Ferdinand Barbedienne, the "Société Collas et Barbedienne", for the production and marketing of reduced copies of sculptures in different materials ranging from plaster and wood to bronze and ivory. The first product of the company was a reproduction of the "Venus of Milo", but for the next ten years nothing much happened, until Barbedienne sent some pieces to The Great Exhibition of 1851, where the company received a special medal. Further success came in 1855, when Collas was awarded the Grand Médaille d'Honneur of the Exposition Universelle in Paris. By the time of Barbedienne's death in 1892 the company had some 600 employees. It existed until 1954.