Square Knot This easy-to-follow tutorial shows you how to work the macramé Square Knot. The Square Knot is a continuation of the Half Knot (the "half" refers to "half of the square"). Get more details on using this knot and other macramé knots in our stitch guide. This tutorial is made using Bernat Macramé specially designed 5 mm 3 ply macramé cord partially made of recycled cotton.