You can see the whole process of production that Helene uses here on Cargo Collective.
"PEPE is made of paper-thin veneer and therefore lightweight but also very stable.
The process is as exciting as the result. The veneer is only 0.5 mm thick and moistened on one side with glue, this is then rolled into a tight pipe and pressed. Manufacturing in this way results in a strong structure with a novel 3D form and flat sections for assembly. The flexible process cleverly uses different pressing angles to make shaping in any direction possible.
PEPE is lightweight and stable and uses a production method developed at CuldeSac Valencia during "The great tobacco project" in 2011." Helene Steiner