IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Toothed Steel Sickle: Steel Welded to Iron, Toothed with a Chisel
As made in the cutlery trades around 1913, a sickle is formed like a scythe: steel is welded lengthwise on to iron and forged out into the blade, while the iron makes a thick back that keeps it rigid. The blade is bent to its curve, smithed over and roughly ground, then toothed with a small chisel and hammer. After hardening and tempering it is ground again, which perfects the keenness and shape of the teeth, then glazed and hafted.
Ilọsíwájú
1–2 days
Ìlànà
1
1
Weld steel to iron
Weld steel to iron
Forge-weld a strip of shear or blister steel lengthwise on to an iron bar, then forge the steel out into the blade with the iron along the back. Leave the end of the iron as the tang.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá irin lílù1 ẹyọ
Ọ̀pá irin onígbọ̀gbọ̀1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹ
Ìdí Alágbẹ̀dẹ
Òòlù Alágbẹ̀dẹ
Ẹmú Alágbẹ̀dẹ2
2
Bend and smith
Bend and smith
Bend the blade to the sickle's curve and smith it over carefully with the hammer.
Àwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹÌdí Alágbẹ̀dẹÒòlù Alágbẹ̀dẹ3
3
Rough grind and tooth
Rough grind and tooth
Grind the blade roughly, then cut the teeth along the edge with a small chisel and hammer.
Àwọn irinṣẹ́ tí a nílò:
Òkúta ìfá oníkẹ̀kẹ́
Ìlù ìgé eyín fáìlìÒòlù Alágbẹ̀dẹ4
4
Harden and temper
Harden and temper
Harden and temper the blade.
Àwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹẸmú Alágbẹ̀dẹ5
5
Grind, glaze and haft
Grind, glaze and haft
Grind the blade again; this perfects the keenness and the shape of the teeth. Glaze it and fit the handle on the tang.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Igi Líle Fún Ìdìmú1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Òkúta ìfá oníkẹ̀kẹ́
Àgbá ìdán dídánÀwọn ohun-èlò
3- 1 ẹyọÀyè
- Àyè
- 1 ẹyọÀyè
Àwọn irinṣẹ́ tó nílò
7Ìtọ́nisọ́nà yìí ń ṣe
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