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
Wood Chisels and Gouges Forged from Tool Steel
A woodworking chisel is a flat steel blade with a bevelled edge, hardened and tempered, on a wooden handle; bevelled sides let it into tight corners. A gouge is the same with a blade curved in section, for hollowing. Forge a set of widths from tool steel, harden them, temper to a dark straw and hone them sharp.
The picture: a bevel-edge wood chisel with its ferrule and wooden handle.
Ilọsíwájú
A day for a set
Ìlànà
1
1
Forge the blades
Forge the blades
Draw tool-steel bar out flat to each blade width, taper it slightly toward the edge and forge a square tang on the other end. For gouges, set the hot blade over a round groove of the swage block and drive it in to curve it.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá pẹlẹbẹ irin irinṣẹ́1 ẹyọ
Èédú1 as requiredÀwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹ
Ìdí Alágbẹ̀dẹ
Òòlù olórí ìtẹ̀ ìpakà
Bulọ́ọ̀kì ìṣẹ̀dá oníhò
Ẹmú alágbẹ̀dẹ
Ìbọ̀wọ́ wẹ́lídìn
Gíláàsì ààbò2
2
File and bevel
File and bevel
Anneal by cooling slowly in the ashes, then file the faces flat, file the side bevels, and file the edge bevel, leaving it a little thick.
Àwọn irinṣẹ́ tí a nílò:
Ìfá Irin3
3
Harden and temper
Harden and temper
Heat the blade evenly to a cherry red and quench it in water. Polish it bright, then heat the back gently and quench again as soon as a dark straw colour reaches the edge.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Omi10 lítàÀwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹ
Àpótí ìtutùẸmú alágbẹ̀dẹÌbọ̀wọ́ wẹ́lídìnGíláàsì ààbò4
4
Handles
Handles
Turn hardwood handles, fit a brass ferrule at the front of each, drill a pilot hole and drive the tang in. Oil the handles.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Tẹ́ẹ́rẹ́ igi líle2 ẹyọ
Pẹlẹbẹ Bronse1 ẹyọ
Òróró Ọ̀gbọ̀0.05 lítàÀwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìyí igi
Ìlù ọwọ́5
5
Hone
Hone
Flatten each back on the stone and hone the bevel until a fine burr forms, then remove it.
Àwọn irinṣẹ́ tí a nílò:
Òkúta ìpọ́n grit 10006
6
Temper colours
Temper colours
Ń ṣí ìwé Jupyter…
Àwọn ohun-èlò
6- Àyè
- 1 as requiredÀyè
- 10 lítàÀyè
- 2 ẹyọÀyè
- 1 ẹyọÀyè
- 0.05 lítàÀyè
Àwọn irinṣẹ́ tó nílò
12- Àyè
- Àyè
- Àyè
- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
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