UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Brick Blacksmith's Forge with a Bottom-Blast Tuyere
A forge is a hearth with a bowl for the fire and an opening in its bottom, the tuyere, through which the blast of air is forced. One smith's forge of the 1880s was two feet four inches high and four feet square, built of brick and stone, with a 12-inch chimney flue, the tuyere iron set four inches below the surface and the forge hollow underneath so the fire could be dumped and the ashes cleared. Advice of the same time: keep the tuyere's centre at least eighteen inches from the back wall and the working side, set its top four to six inches below the hearth (deeper for heavy work), and leave a recess in the back wall at least 8 inches deep, 24 high and 24 wide. The blast came from a blower or bellows.
Hagati
Several days
Amabwiriza
1
1
Build the base
Build the base
Build the hearth of brick and stone, about two feet four inches high and four feet square (one smith's size), hollow underneath with an opening for the ash.
Ibikoresho by'iyi ntambwe:
Amatafari y'ibumba ryotswe1 as required
Amabuye1 as requiredIbikoresho bikenewe:
Umwiko w'umwubatsi2
2
Back wall and recess
Back wall and recess
Raise the back wall and chimney with a 12-inch flue; leave a recess at least 8 in deep, 24 in high and 24 in wide behind the fire.
Ibikoresho by'iyi ntambwe:
Umuyoboro wa shemine1 igiceIbikoresho bikenewe:
Umwiko w'umwubatsi3
3
Set the tuyere
Set the tuyere
Set the tuyere with its centre at least 18 in from the back wall and the working side, its top 4–6 in below the hearth surface.
Ibikoresho by'iyi ntambwe:
Tuyère y'icyuma y'uruganda rw'umucuzi1 igice4
4
Blast
Blast
Connect the blower or bellows to the tuyere pipe, with a way to open it underneath and clear cinders.
Ibikoresho bikenewe:
Ifeni y'uruganda rw'umucuzi izungurutswa n'intokiIbikoresho
4- 1 as requiredUmwanya
- 1 as requiredUmwanya
- 1 igiceUmwanya
- Umwanya
Ibikoresho bikenewe
2- Umwanya
Iki gishushanyo gikora
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