I got a question about blocks in “twill diaper coverlets”. Diaper is a term that means the textile is patterned in an all over design. Often it is in small diamonds. In Twill Diaper Coverlets the principle is based on warp face (3/1) twill contrasting with weft faced (1/3) twill. In other words the blocks woven in either 1/3 or 3/1 twill. Each block requires enough shafts to make twill (so that means 4 shafts are needed per block). Let’s say the blocks that are weaving pattern will be in 1/3 (weft faced) twill and those in the background are 3/1 (warp faced twill). Read about profile drafts in my new book Weaving for Beginners, and in Book #3 Weaving & Drafting your own Cloth (in the Drafting for Multi-shaft chapter beginning on page 236. )Read on.
Beautiful examples of these coverlets are in the book, “Keep Me Warm One Night” by Burnham & Burnham. They look like overshot coverlets, but instead of being overshot weave structure (which needs only 4 shafts to make 4 blocks), they are woven in twill diaper (where each block needs 4 whole shafts and a 4-block design would then require 12 shafts). For the pattern blocks instead of weft thread floats, the blocks are woven in weft faced twill (1/3 twill).
This is not a beginner’s weave but the concept is the same as block substitution anywhere. You start with a profile draft and plug in the weave structure that you want to use. Read about block substitution in Weaving for Beginners and Weaving & Drafting Your Own Cloth.