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Rice Straw Ash: Burned in a Pit and Sieved
Japanese swordsmiths coat the steel in clay, water and straw ash between heatings and folds, to keep it from oxidising. Burn dry rice straw down to ash in a pit, let it cool, and sieve it fine.
The picture: our diagram, straw to fire to sieved ash.
初学者
An evening, cooled overnight
说明
1
1
Burn the straw
Burn the straw
Light a small fire in the pit and feed the dry rice straw onto it an armful at a time, letting each burn down before adding more.
此步骤所需材料:
水稻秸秆5 公斤所需工具:
火塘
弓钻
火绒束
皮革工作手套2
2
Cool
Cool
Let the ash go fully cold overnight before you touch it.
所需工具:
火塘3
3
Sieve and keep
Sieve and keep
Shovel the ash through a fine sieve to take out unburned bits and charcoal. Weigh it and keep it dry in a lidded bucket.
所需工具:
铁锹
细目筛
带盖金属提桶
等臂天平
防尘口罩4
4
Ash from your straw
Ash from your straw
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