An article from Master Weaver on "crazy twills," four-shaft twills in which the diagonal is broken into short runs separated by gaps, producing irregular texture and pattern that suggests many more shafts. It explains how to design them from a sequence of short diagonals (marked + or -) and a longer repeat, with threading diagrams for sequences A to G and draw-downs in Figs. 2 to 6. It also covers treadling (which follows the threading), the resulting fabric effects (wavy diagonals, arrowheads, distorted diamonds), and balanced sequences. It ends by promising a follow-up article on practical projects.