Ian Davenport’s 48 metre-long painting Poured Lines transforms the tunnel beneath a railway bridge in Southwark, close to Tate Modern. The painting’s numerous vitreous enamel panels were created in a German factory where they were baked at fearsomely high temperatures. This film follows the artist as he creates this remarkable public artwork. Like all of Ian Davenport’s work, Poured Lines rigorously explores the qualities and possibilities of...