A short article from Master Weaver explaining Dornick twill as a four-shaft pattern weave. It distinguishes Dornick twill (a staggered 2:2 herringbone twill with floats no longer than two) from Dornick weave, and shows how to design small and large patterns by skipping a heddle at each turning point. It covers finding treadlings, correcting diamond proportions with weft, beat and sett, and ends with a practical upholstery project in mercerized cotton with warp and weft specifications.