UBUCIKO
UBUHLE NEMPILO
UBUCIKO BEZANDLA
AMASIKO NOMLANDO
EZOKUZIJABULISA
IMVELO
UKUDLA NEZIPHUZO
REVERSE ENGINEERING
IZAYENSI
EZEMIDLALO
UBUCHWEPHESHE
IZINTO EZIGQOKWAYO
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.
Oqalayo
Half a day
Imiyalelo
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.
Izinto zokwakha zalesi sinyathelo:
Itshe Lesihlabathi (Elokugaya)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.
Amathuluzi adingekayo:
Izimbazo zokuqopha itshe
Isando sokuqopha itshe
Izibuko zokuphepha3
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.
Izinto zokwakha zalesi sinyathelo:
Isihlabathi0.5 kg
Amanzi2 amalithaAmathuluzi adingekayo:
Itshe elikhulu elicaba
Umphetho oqondile4
4
Test it
Test it
Soak it in water and hone a dull knife on it: the edge should come up keen but coarse.
Izinto zokwakha zalesi sinyathelo:
Amanzi2 amalithaAmathuluzi adingekayo:
IndishiIzinto
3- Isibambeli
- 0.5 kgIsibambeli
- 4 amalithaIsibambeli
Amathuluzi Adingekayo
6- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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