A short article by Ralph Griswold on designing crackle weave, a version of point twill, using blocks and motifs. It gives the four-shaft block threadings (A-D), the rules of Berta Frey and Harriet Tidball for inserting incidentals or deleting ends at block boundaries, and extends the approach to six or more shafts. It also presents a motif-along-a-path approach to design, illustrated with drawdowns, and ends with a large sample pattern image.