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HIBURAN
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KEJURUTERAAN TERBALIK
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TEKNOLOGI
BOLEH PAKAI
Sinew Cord: Two Plies of Sinew Reverse-Wrapped
Sinew is extremely strong, holds its own natural glue and shrinks as it dries. Circumpolar peoples used it as their only cordage. Twist wetted sinew threads into two plies and wrap them round each other the opposite way, so the twists lock into a cord.
The picture: string made from whale sinew in Tierra del Fuego, collected in the late 19th century.
Pemula
Two hours
Arahan
1
1
Wet the sinew
Wet the sinew
Soak the sinew threads in water for a few minutes until soft. Split them into two equal bundles, staggering the ends so the joins do not line up.
Bahan untuk langkah ini:
Benang Urat6 m
Air0.25 literAlatan diperlukan:
Balang Kaca
Pembaris2
2
Reverse-wrap
Reverse-wrap
Hold the two bundles together at one end. Twist the far bundle away from you, then lay it over the near one toward you. Repeat, so each ply is twisted one way and the pair wraps the other way.
Alatan diperlukan:
Pembaris3
3
Splice in
Splice in
When a ply runs short, lay a new wet thread along its end and keep twisting; the sinew's own glue holds it as it dries.
Alatan diperlukan:
Balang Kaca4
4
Dry and trim
Dry and trim
Stretch the cord gently and let it dry; it shrinks and tightens. Trim the loose ends.
Alatan diperlukan:
Pisau Batu Api5
5
Thread needed
Thread needed
Memuatkan buku nota Jupyter…
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