Method of knitting a warp structure on a flat knitting machine

System and method of manufacturing a unitary construction of a weft knit article with one or more warp insert in an integrated knitting process by using a weft knit machine. The unitary construction comprises one or more yarn materials which are incorporated into one or more weft and warp stitch structures. The knitting machine is equipped with a warp feeder assembly, including a weft knit warp feeder, a warp knitting guide needle block operable to hold a plurality of warp strands, a strand guide bar configured to guide the plurality of warp strands to the weft knit warp feeder, and a cam box. The cam box includes at least a weft stitch cam, a weft guard cam, a warp stitch cam, and a warp guard cam.