Figure 1. Components of the flexural-slip folding technique. The template surface defines the initial slip system geometry. The target surface defines the final slip system geometry. Passive surfaces are carried with the template surface as it is deformed with the flexural-slip algorithm. The pin surface defines the surface of zero slip during the folding process. The intersection line of the unfolding plane and the template surface defines the folding direction in which the line length of the template surface is maintained.