Elastic Stretchy Cast-on for Ribbing Tutorial 1 Method 6 of 18 Knitting Basics www.youtube.com/... Learn how to knit the 1x1 rib cast on using one knitting needle. Casting on this way you create a very elastic stretchy edge. This method is sometimes called invisible cast on or tubular cast on. The cast on rib looks little different we king of have a pair of stitches going together one is purl stitch and one is a knit stitch. Thanks for watching!