TEDAC Tremplin pour l'Emploi, le Développement et l'Avenir en Cévennes) is an association located in the Cevennes at La Grand-Combe. This association runs a Chantier d'Insertion (work integration program) which has two main activities: the maintenance of natural areas through campaigns to uproot Japanese knotweed (an invasive plant which proliferates on the banks of local rivers) and the production of small wooden objects in a carpentry workshop.
Atelier LUMA set up a first collaboration with TEDAC in 2019 to recycle uprooted Japanese knotweed. In June 2021, Atelier LUMA organized a week of workshop and production, to further engage in this collaboration, and to showcase the work of the Chantier d'Insertion employees. In the TEDAC workshops, the Atelier LUMA team and the designer in residence Samy Rio shared techniques for transforming knotweed into honeycomb materials.
At the end of this week of workshops, two types of objects were developed: a box and a stool.