An article from Master Weaver explaining double diagonal (DD) twills, in which the threading has two diagonals and the spacing between diagonals in the pattern is twice that of plain twill. It covers drafting rules and treadling for 4 frames, then variations for 6 and 8 frames, tie-up options, and the lack of tabby. Treadling suggestions and two practical projects (upholstery on 4 frames, curtains on 8 frames) with sett, reed and yarn details are included, along with advice on combining treadles on a direct tie-up.