Warp thread is on a continuous spool of some sort, usually called a bbop. If you look really carefully at my ear ring, this is a little baby weaving shuttle. So that would be the thread, and it would be in this shuttle, and you'd pass it back and forth. On the sides you have what are called salvages. That's the side where each pass of weft wraps around. The two sides, it will be finished. And one mark of a good hand weaver is how even theirsel ages are. They'll look quite finished. But then there still are to go to your original questions. When i'm making something like a bed sheet