Cutting bark with a stone

用石頭切割樹皮

Splitting wood with a stone

用石頭把樹枝切開

Assembling fan and rotor

組合風扇和轉軸

Lashing together with strip of bark fiber

將樹皮和纖維捆綁在一起

Fanning fire

煽火

Digging clay from creek bank

從溪流的岸邊挖粘土

Making a fan housing from clay

製作粘土風扇外殼

Hole in housing should be same size as hole in spout

中間的孔要跟出風口一樣大

Drying in hut next to fire

在小屋的火堆旁烤乾

Dried housing

烤乾的外殼

Wooden socket

木製的轉軸凹槽

Air is now sucked through top of housing and is blown out towards the fire

空氣會從上方的孔被吸進來，從出風口吹向火源

Fan always blows air regardless of which way it spins

不管從哪個方向轉，風扇都會把空氣吹向火源

Clay pipe or "Tuyere"

粘土管道，或者說吹風嘴

Now air is forced directly into fuel bed

現在空氣可以直接注入燃料堆裡

Wooden stakes

立木樁

Carving another socket

挖出另一個轉軸凹槽

Lashing crossbar on with lawyer cane

把橫桿和兩隻木樁綁在一起

Making cordage from bark fiber

用樹皮纖維編織繩索

Cord is attached to stick and looped around fan rotor

把繩子綁在木棍上，拉動轉軸

Rotor spins easier and faster now

現在轉軸更容易旋轉而且更快

Making a furnace from mud

用泥土做出熔爐

Iron bacteria (orange slime)

鐵細菌（橘色的泥土）

Iron bacteria is commonly found in creeks, swamps and springs

鐵細菌容易在小溪，沼澤和泉水旁找到

Crushed charcoal is added to reduce the ore to iron and white wood ash is added to lower the melting point of the ore

加入壓碎的木炭和木灰可以降低礦石的熔點

The ingredients are formed into a brick

把他們混合成磚塊狀

Charcoal from a previous video

之前影片裡做的木炭

Pulling melted material from furnace

把熔化後的材料拿出來

This is mostly slag

這主要是爐渣

A few tiny specks of iron metal from the slag

從爐渣中挖出來一點點的鐵粒

Parts of the blower

鼓風爐的零件

Assembled blower

組裝好的鼓風爐