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Shingane: Low-Carbon Iron Folded on Itself for a Sword's Soft Core
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Shingane: Low-Carbon Iron Folded on Itself for a Sword's Soft Core

Shingane is the soft core of a Japanese sword: very low-carbon iron, folded several times on itself to purify it, so it stays nearly pure iron and barely hardens. Coat it in clay, water and straw ash at each heat, fold and weld it, then draw it into a bar to fit inside the harder edge steel. The picture: our diagram, a bar folded into layers.
Osezingeni eliphezulu
A day

Imiyalelo

1

Mix the coating

Stir clay into water with rice straw ash to a thin slurry.

Amathuluzi adingekayo:

UbumbaUbumba
Umlotha wotshani belayisiUmlotha wotshani belayisi
AmanziAmanzi
IndishiIndishi
2

Heat and coat

Bring the low-carbon iron to a welding heat, dip or paint it in the slurry, and return it to the fire.

Izinto zokwakha zalesi sinyathelo:

Insimbi yokukhandwa eyindukuInsimbi yokukhandwa eyinduku1.5 kg

Amathuluzi adingekayo:

Iziko lomkhandi wensimbiIziko lomkhandi wensimbi
AmalahleAmalahle
Udlawu lomkhandi wensimbiUdlawu lomkhandi wensimbi
Amagilavu okushiselaAmagilavu okushisela
Izibuko zokuphephaIzibuko zokuphepha
Ipheshana LesikhumbaIpheshana Lesikhumba
3

Fold

Draw the bar out, cut it halfway across on the hardy, fold it back on itself and weld it solid. Recoat and repeat, about six times.

Amathuluzi adingekayo:

Iziko lomkhandi wensimbiIziko lomkhandi wensimbi
Isisiki esimiswa ensimbini yokukhandelaIsisiki esimiswa ensimbini yokukhandela
Isando somkhandi wensimbiIsando somkhandi wensimbi
Isando esikhuluIsando esikhulu
Insimbi YokukhandelaInsimbi Yokukhandela
Udlawu lomkhandi wensimbiUdlawu lomkhandi wensimbi
Amagilavu okushiselaAmagilavu okushisela
Izibuko zokuphephaIzibuko zokuphepha
Ipheshana LesikhumbaIpheshana Lesikhumba
4

Draw the core bar

Draw the folded iron into a bar of the size the edge steel will wrap around.

Amathuluzi adingekayo:

Iziko lomkhandi wensimbiIziko lomkhandi wensimbi
Isando somkhandi wensimbiIsando somkhandi wensimbi
Insimbi YokukhandelaInsimbi Yokukhandela
Udlawu lomkhandi wensimbiUdlawu lomkhandi wensimbi
Amagilavu okushiselaAmagilavu okushisela
Izibuko zokuphephaIzibuko zokuphepha
Ipheshana LesikhumbaIpheshana Lesikhumba
5

Layers

Ilayisha incwadi ye-Jupyter…

Izinto

1

Amathuluzi Adingekayo

14

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Folding and Forging a Katana Blade — Nihonto Swordsmithing

Folding and Forging a Katana Blade — Nihonto Swordsmithing

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Izikhali

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Rice Straw Ash: Burned in a Pit and Sieved

Rice Straw Ash: Burned in a Pit and Sieved

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Umsebenzi Wensimbi

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Smelting Tamahagane Steel in a Tatara Furnace — Traditional Japanese Steelmaking

Smelting Tamahagane Steel in a Tatara Furnace — Traditional Japanese Steelmaking

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Umsebenzi Wensimbi

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