Lauri asked how the fan reed works to make wavy wefts and well as straight-across ones. When the fan reed is raised and lowered, the spacing in the reed changes to cause warps to be more dense or less dense in areas, making the weft wavy. The waves occur this way: where the warps are close together, the wefts can’t beat down as much so the wefts will be higher so-to-speak. Where the warps are sparse, the wefts beat down significantly more. At first I just thought that if the reed were stationary the wefts would be straight, but there is no place on the reed where the wires are evenly spaced. I, too, wonder how the obi was woven with mostly straight wefts and areas with wavy lines. Any ideas? The obi hangs in my living room, across from the computer where I look at it everyday. I’ll be pondering this question. I hope someone will have the answer.
Read more about fan reeds in my post on January 18, 2011.