A one-page Information Service item from Master Weaver explaining why the weft curves up at the selvedges of handwoven cloth. It distinguishes curvature across the whole width, caused by weft take-up with an open warp and elastic weft, from curvature at the edges only, caused by too little weft left in the shed and the warp being drawn closer at the edges. Three small diagrams illustrate the weft lines. The page also begins with the end of a preceding note on threading and yarn requirements for tabby, twill and block patterns.