Back Strap Loom
In
 primitive societies it provides a weaving device at very little cost.  It is very portable and 
can be set up and used almost anywhere. 
The primary feature of the back 
strap 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. By backing away from the post or tree, the user can
 pull the warp threads into tension. 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 repeating this process, fabric can be woven. Using the 
backstrap loom, a weaver can produce fabric with a plain weave. 
This is a method used in LEDC countries and those where weaving is a cultural tradition.

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