WikiRug:Featured Article/2023/3

Whether the carpet is flat-woven or piled, the basic components are the warps, which run from end to end of the rug, and the wefts[4], which are passed from side to side alternately over and under the warps, thus binding them together to produce the foundation of the carpet.
In pile rugs supplementary weft yarns, or “knots”, are wrapped around the warps between the foundation wefts, then cut; the cut ends project on the surface to form the pile and create the design. Knots are generally tied to pairs of warps. The two basic types of knots found in Persian carpets are the symmetrical and the asymmetrical both of which may be open either to the right or, more commonly, to the left.(Full article...)