Three types of inkjet-printable translucent drafting materials are available for markable overlays, mixed-media art projects and other projects: vellum, Mylar, and PET tracing film. Understanding how these materials differ can help you understand the best option for your planned printing project.      Inkjet Vellum Paper Vellum is a foldable, moderately translucent paper made from cotton or wood pulp. Its slightly…