I bought a woven sash, that was made of wool as the weft and linen (ok maybe cotton) cords as the warp , instead of a stretchy, all wool one. Then I marked the middle with pins and how far out from the middle would work as the shoulder strap portion of the tumpline. Then I removed the wool weft until it met the pins.
This left me with several, long strands of warp on both ends, which I braided into pairs of cords on both ends....voila, a woven tumpline. Not finger woven, I know, but I like a very wide strap, and none of the finger woven ones were that wide. :idunno:
Even with the wider strap..., a tumpline pushes you toward minimalist when it comes to weight.
LD