Abstract: A folding cutting board has a contiguous cutting surface, and an opposed surface subtended by four distinct and generally parallel grooves. The grooves form five body members, four which have approximately equal surface area and one which has a width approximately equal to twice the thickness of the substrate. With this relationship, the cutting board may be folded into a compact and durable structure for transport which requires only one quarter the surface area, and which still provides the solid, non-porous and uninterrupted surface for cutting or working. Special hinges are also illustrated herein having a smooth curve within the region of flexure which prevents undesired concentration of stress. In adjacent and relatively non-pliant regions, a second geometry is superimposed which serves to clear away obstacles, including fingers, from the hinge region during movement therein. Consequently, the hinge structure is a “no pinch” hinge.