Tracing film, unlike tracing paper, is designed to take on a design so that it can then be transferred to leather. The film is made of a acetate like plastic that will take pencil or marker, but is flexible. When tracing a pattern onto leather, a "stylus" is used to impress the design into the leather enough to be clearly visible by firmly tracing over the lines. Once the pattern has been transferred, the shallow lines are cut or tooled into the leather. Take the guided tour to learn more about this process.