Quill and China Ink
All those drawings are made with a metalic quill and black china ink on 200 g/m² fine paper. They're protected under a glass in a frame of 40 cm wide for 50 cm of height and each frame contains the metallic quill used to draw the letters.
Some of those drawings need more effort than others to be achieved. So the time spent for that kind of creation - with quill and china ink - goes between 8 and 12 hours. Patience, dexterity, and knowledges are necessary right here. All those artworks are unique and entirely handcrafted.