Lesson 9 in the Master Weaver series "Problems in Teaching," on converting a design profile into a threading draft. It explains how each profile square is replaced by one or more weave units, with lists of unit threadings for summer and winter, triple spot, huckaback, Bronson lace, dimity, dornick and damask. Worked examples show how to scale the number of units per square to fit a given warp width and sett, with condensed threading drafts.