The four primary base structure of knit fabric | Plain, Rib, Interlock, Purl

·        Plain is produced by the needles knitting as a single set, drawing the loop away  from the technical back and towards the technical face side of the fabric.

·        Rib requires two sets of needles operating in between each other so that wales of face stitches and wales of reverse stitches are knitted on each side of the fabric.

·        Interlock was originally derived from rib but requires a special arrangement of needles knitting back to back in an alternate sequence of two sets, So that the two courses of loops, show water of the loops on each side of the fabric.

·        Purl is the only structure having certain Wales containing both face and reverse meshed loops. Double – ended latch needle, some v-bed flat m/c with rib loop transfer can knit this type of fabric.