The first step, after carefully planning the graphic design, is to construct a master or
"template" using ordinary materials like heavy gauge aluminum foil, tracing wheels,
carbon paper, string, and so forth. Braille labels to identify key components of a diagram
or drawing are embossed onto heavy paper and glued to the master. Copies are made by placing
the master in a heated vacuum press, called a Thermoform machine, which melts the plastic
Thermoform pages around the template to form the image.
