Crafting a cardigan involves the process of knitting. Knitting is a craft that involves interlocking loops of yarn or thread to create a fabric. It is usually done with two needles and requires patience and skill. The end result of knitting is a garment such as a cardigan, which is a type of sweater that opens in the front. Crafting a cardigan requires the knitter to measure, cut, and sew the fabric together. The knitter must also choose the right type of yarn for the project.