Third installment of a series on two-warp weaves from Master Weaver, introducing two-warp double weaves on four shafts with a second warp beam. It gives warp specifications (280 ends each of 8/2 or 10/2 cotton, sett 40 epi), a threading draft with a full tie-up and a skeleton tie-up, and treadling experiments. The experiments vary the tension of the two warps to produce ribbed, double-weft, loose-layer and pleated effects, as a step toward relief patterns and tissue weaves.