The folding fan is composed of a folding mechanism and fan leaves, so I will start by exploring the craftsmanship of creating the folding fan surface. Several books by Paul Jackson, such as "Folding Techniques for Designers" and "Complete Pleats," are my original resources. Those intricate folds, transforming a sheet into a folding form, have captured my attention.

My basic method involves creating parallel pleats in a rectangular sheet of printed paper once, then turning the shape into a fan shape. In this way, I can apply any type of fold from parallel to rotation forms.

Rotational accordion pleats of valley sixteenths