Circular knitting cast-on
Knitting - Basic Techniques
When knitting in the round to make a tubular fabric, circular needles are used. Use any of the cast-on methods, the illustration shows long-tail cast-on.
When beginning the first row, be sure to keep the cast-on stitches all facing the same direction. The stitches on the ends can get twisted, so be sure to check them carefully. It’s a good idea to place a marker between the first and last stitches.