UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Sandstone Whetstone
Before bonded abrasives, edges were sharpened on natural stone, and fine sandstone was the commonest. A piece is shaped to a block and one face is ground dead flat by rubbing it on a flat slab with sand and water. Used wet, its quartz grains cut steel. Sandstone cuts fast but coarse: finish an edge on a finer stone.
Utangiye
Half a day
Amabwiriza
1
1
Choose the stone
Choose the stone
Pick a piece of fine, even-grained sandstone without cracks or soft layers, a little bigger than the block you want.
Ibikoresho by'iyi ntambwe:
Ibuye ry'Umusenyi (Iryo Gusya)2 kg2
2
Shape a block
Shape a block
Wearing glasses, trim it to a rough block about 200 by 60 by 30 mm with the chisels and hammer.
Ibikoresho bikenewe:
Ibyuma byo gushushanya amabuye
Inyundo yo gushushanya amabuye
Amadarubindi y'umutekano3
3
Flatten the face
Flatten the face
Sprinkle sand and water on a large flat stone and rub the stone's face on it in figure-eights until the straightedge shows no light under it.
Ibikoresho by'iyi ntambwe:
Umusenyi0.5 kg
Amazi2 litiroIbikoresho bikenewe:
Ibuye rinini risingiye
Agapimo kagororotse4
4
Test it
Test it
Soak it in water and hone a dull knife on it: the edge should come up keen but coarse.
Ibikoresho by'iyi ntambwe:
Amazi2 litiroIbikoresho bikenewe:
IbakuliIbikoresho
3- Umwanya
- 0.5 kgUmwanya
- 4 litiroUmwanya
Ibikoresho bikenewe
6- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
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