Each month I'm presenting a new tutorial on a medieval skill from various types of textile-related crafts. The purpose is two-fold. First, it will allow me to locate, study, and try a variety of new techniques I might otherwise overlook, and second, it's an easy way to get information out there about skills that other people might be looking for or find helpful. This month, I present Interlaced Herringbone Insertion Stitch. If you've done any studies on the Cap of Saint Birgitta, you've…
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