A flexible flat belt made up of a plurality of covered wires abutting each other in side-by-side relationship. Imaginary lines on the peripheries of the covered wires which are parallel to and remote from the axes of the wires determine at least one plane. The adjacent wires form troughs parallel to and spaced apart from the axes and adhesive is applied to the troughs between adjacent wires. It is preferred that a first adhesive, which sets instantaneously, be applied at spaced apart intervals between adjacent wires. Since this adhesive is spaced apart, flexibility is not impaired. This is used in conjunction with the second adhesive which is non-setting and is supplied substantially throughout the length of adjacent wires. Due to its character, it does not interfere with the flexibility of the flat cable. When wires of different diameters are used, they are either placed on a planar work surface and the adhesives applied between adjacent wires on the opposite side from the work surface or the work surface is provided with an offset so that the smaller diameter wires are placed on the offset surface and the larger diameter wires are placed on the surface portion. Since the offset equals the difference between the two diameters, the first set of imaginary lines forms the first plane, thus permitting easy application of the two adhesives.