A two-page article from Paul O'Connor's series on double weave, covering double weave of separate layers on four harnesses using a skeleton tie-up. It explains leaving top warp threads floating over a tabby lower layer, using leno, and blending four warp colors in the top and lower layers with treadling sequences for each pair, and how to avoid float errors when changing blends. The second half covers double width weaving, slit placement at the selvage or center, treadling and selvage cross checks, and a ruana project combining double width and separate layers.