Single fold refers to a method of folding paper or fabric where it is simply folded in half, creating two layers. This technique is commonly used in various applications, such as in origami, where it serves as a foundational step for more complex designs. The resulting crease marks the center of the material, making it easier to work with. In the context of textiles, single fold can also describe the way fabric is finished or hemmed. This technique provides a clean edge and is often used in sewing projects to prevent fraying. It is a straightforward approach that simplifies the finishing process.