Someone considers that use spool knitting to knit a sweater. In fact, spool knitting is only suitable for scarf. Spool knitting also called as corking is traditionally done over 4 nails driven into a wooden spool, but all sorts of nancies are available now.
All of cords have to be sewed by hand. It cannot be sewed by using machine. Circular knitting machine can knit a sweater. The machine can improve quality and output of sweater. Only changing different needle on circular knitting machine can knit various types of sweater which welcome by customers.