He completed his military service, then organized an Exhibition of the Society of Friends of the Gold Coast to promote art in its region.

Dampt's students include the Americans Frederick Ruckstull, Charles Grafly, and Cyrus Edwin Dallin, and the Swiss Jean Dunand.

In 1895, Dampt was a founding member of the arts group Les Cinq, which sought to apply new mechanical methods to furniture design.

The four other founding members were architect Tony Selmersheim, designer Felix Aubert, sculptor and craftsman Alexandre Charpentier, and the painter Étienne Moreau-Nélaton.

Architect Charles Plumet would join in 1896, changing the group's name first to Les Six and then to L'Art pour tous with the later association of Henri Sauvage and others.