stitching encases the yarns into a bundle forming the craft yarn 18 fig3 shows schematically the progression along a yarn bundle 20 by the progressive stitch or points 26 laying the zig zag thread 28 therealong fig4 shows more pictorially the essential craft yarn construction as the threads 28 encase the bundle of yarns 20 many variables are available in constructing the craft yarns first the selection of the basic yarn 20 may vary from a few strands of a very fine thread up to a great number e g 36 45 or greater number of thin strands or they may be several strands of a very heavy knitting yarn or the like the bundled yarn is then encased by the outer zig zag thread which again may be varied widely between great limits as to color size and type of thread in addition to the basic yarn variables the operator then has the choice of bite or the side to side needle spacing as well as the stitch length i e the longitudinal stitch spacing variation of the bite and stitch length is directly related to the resiliency of the craft yarn that is the ability of the yarn to be bent and take a set versus a generally resilient character in any.