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Forge Hearth of Mud Brick with a Clay Tuyere from the Back Wall
A forge is a hearth for heating metal: a bed of burning charcoal held against the mouth of a tuyere, the pipe that brings air from the bellows. The simplest is a hole in the ground with a pipe leading into it. Build a low box of mud brick with a clay pipe through the back wall, blown by bellows.
The picture: a forge fire blown hot, throwing sparks.
初学者
Two days
说明
1
1
Lay the box
Lay the box
On level ground, lay mud bricks in clay mortar into a low open box, three courses high, with a shallow fire pot in the middle (step 5).
此步骤所需材料：
日晒土坯砖32 个
黏土20 公斤所需工具：
铁锹
水
金属桶2
2
Make the tuyere
Make the tuyere
Roll a thick clay pipe round a wooden stick, about 4 cm bore (ours), and pull the stick out. Set it through the back wall so it opens just above the fire pot, and bed it in clay.
此步骤所需材料：
黏土3 公斤所需工具：
笔直的木杆3
3
Dry and connect
Dry and connect
Let the clay dry for a day or two. Join the bellows nozzle to the outer end of the clay pipe.
所需工具：
风箱4
4
Light the forge
Light the forge
Light kindling from a bow-drill ember in the fire pot, heap charcoal over it in front of the tuyere and blow gently until the bed glows.
此步骤所需材料：
干树叶与引火柴1 个所需工具：
弓钻
木炭风箱
皮革工作手套5
5
Bricks for the hearth
Bricks for the hearth
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