Example printed overlays and legends generated by Facade. (a)-(d) demonstrate the different material combinations we tested in the design iterations (NinjaFlex with Braille, Flex+PLA Braille label, Flex+PLA Braille cover, and Flex+PLA embossed letter cover). Facade users can choose to print a legend for the abbreviations (e). If a user does not have a 3D printer at home, models can also be printed through commercial printing services and mail-ordered. (f) and (g) shows two example prints ordered from 3D Hubs using PolyFlex and SemiFlex materials.