Using the curling effect
3D knitted fabrics: knitting additive manufacturing

As can be seen from figure 8 , which illustrates a knitted fabric with identical stitches, known as single jersey, in 3 planes of space, this knitted fabric is naturally not flat, but tends to curl, a process known as "curling". Indeed, because of the bent shape of the stitches, those at the edges, not being blocked by other stitches, are not stable and tend to straighten, dragging along their neighbours. For a face jersey fabric, the wales curl on the technical face direction (where the stitch legs are visible) and the courses curls on the technical back direction (where the stitch heads...