This reportage immerses the viewer in the workshop of the International Center for Research on Glass and Visual Arts in Marseille, where the English collective JAM explores the potential of recycled glass. Following their residency, the photographic series captures the fusion between craftsmanship and experimentation, questioning the impact of waste flows and reuse concepts on creation. Through breath, fire and matter in transformation, these images bear witness to an approach where design and sustainability meet, from architecture to everyday objects.