Third article in Ralph Griswold's series on drafting problem patterns, covering how to turn a two-color pattern with assigned thread colors into a sound interlacement. It explains forced cells versus option points where warp and weft share a color, and shows how to choose options to avoid long floats. Worked examples include a color-alternate twill with floats of length two and a block-substitution fractal where a float of length eight is unavoidable. It closes by noting that hand work is tedious and that a program-based method will be the next article's topic.