One day a student complained that the boat shuttle I loaned her was too big for the sheds on her table loom. I suggested that she throw the shuttle closer to the heddles and advance the warp often. The reason is that the shed is bigger the closer it is to the heddles (shafts). It’s obvious that the shed is small when it is closer to the fell of the cloth (the place where the last weft is woven). A made this into the weaving tip: Sheds Too Small.