The two sets of warp threads can then be reversed and a weft thread passed through again. In order to weave, the threads must be stretched in a horizontal direction and a means must be provided so that the threads can be separated into two (or more) parts so that a weft thread can be passed between the two sets of threads. By backing away from the post or tree, the user can pull the warp threads into tension. The primary feature of the backstrap loom is that the lengthwise threads ( warp) are stretched from a fixed device such as a post or tree to a belt that a person wears around their waist.
It can be set up and used almost anywhere. Even in the more advanced countries it is used. In primitive societies it provides a weaving device at very little cost. Although this loom may pre-date history, it is still in use today.
The backstrap loom is a very ancient type of weaving device.
