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
Forged Ball-Peen Hammer
A 2-pound ball-peen hammer forged from 1½-inch square tool steel; a 6½-inch bar gives two heads. The eye is punched and drifted, the body fullered and rounded so it tapers both ways from a thick centre, then the face is drawn out and swaged and the ball peen rounded in a bottom swage. Both ends are hardened by dipping them in turn, with water dripping on the face, and tempered from the heat held around the eye: dark brown for the face, brown or purple for the peen. The eye cools last, which keeps it tough.
Ilọsíwájú
4–6 hours
Ìlànà
1
1
Mark and flatten
Mark and flatten
Mark the bar with a chisel and centre punch. Flatten the end before punching, or the hole grows too large.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá onígun mẹ́rin irin irinṣẹ́1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Igi Àmì Àárín
Ìlù gbígbóná
Ìléru alágbẹ̀dẹ
Ìdí Alágbẹ̀dẹ
Òòlù ńlá
Ẹmú alágbẹ̀dẹ2
2
Punch and drift the eye
Punch and drift the eye
Punch the eye at the centre-punch mark, drive in a drift and hammer the bulged sides straight.
Àwọn irinṣẹ́ tí a nílò:
Ohun ìlu ihò gbígbóná
Ohun ìfẹ̀ ihò
Òòlù Alágbẹ̀dẹ3
3
Shape the body
Shape the body
Rough out the shape with top and bottom fullers, then round the body at the anvil's rounded edge with a top fuller and set hammer, thicker at the centre than at the ends.
Àwọn irinṣẹ́ tí a nílò:
Fuller (irin ìgbẹ́ ìlà)
Òòlù ìtẹ̀ èjìká4
4
Face and peen
Face and peen
Cut the head from the bar from four sides for a square end. Draw out the face, swage it and trim it with a hot chisel; then cut the peen to length, cut off its corners and round it in a bottom swage. Drive the drift through from both sides to taper the eye.
Àwọn irinṣẹ́ tí a nílò:
Ìlù gbígbóná
Àwòṣe ìsàlẹ̀ ìyíkáOhun ìfẹ̀ ihò5
5
Grind
Grind
Grind both ends, rounding the edges of the face slightly so it does not mark hot work.
Àwọn irinṣẹ́ tí a nílò:
Ẹ̀rọ ìfá orí tábìlì6
6
Harden and temper
Harden and temper
Heat the whole head slowly to the hardening heat and hold it by a tong jaw in the eye. Lower about 1½ inches of the face into water, then harden the peen the same way while water drips on the face, keeping the eye hot. Polish the ends; take the face to dark brown and the peen to brown or purple, then dip the ends alternately so the eye cools slowly.
Àwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹ
Àpótí ìtutùẸmú alágbẹ̀dẹ
Aṣọ emery7
7
Handle
Handle
Shave the handle stock to fit the eye tightly, drive the head on, saw a kerf in the handle's top and drive a glued hardwood wedge into it. Trim flush and oil the handle.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Igi Líle Fún Ìdìmú1 ẹyọ
Gọ̀gọ̀ igi líle1 ẹyọ
Òróró Ọ̀gbọ̀10 mlÀwọn irinṣẹ́ tí a nílò:
Ayùn onídìmú méjì
Ayùn ẹni méjì
Ìdìmú TábìlìÀwọn ohun-èlò
4- Àyè
- 1 ẹyọÀyè
- 1 ẹyọÀyè
- 10 mlÀyè
Àwọn irinṣẹ́ tó nílò
18- Àyè
- Àyè
- Àyè
- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
Blueprint tó jọra
Àwọn blueprint wọ̀nyí pín ìmọ̀ — ọ̀nà, ohun-èlò tàbí ìlànà
CC0 Àgbègbè Gbogbogbò
Blueprint yìí ti jáde lábẹ́ CC0. O lè ṣe àdàkọ, yí padà, pín, àti lò láìsí ìyọ̀ǹda.
Ṣàtìlẹ́yìn Olùṣẹ́dá nípa rírà àwọn ọjà nipasẹ̀ Blueprint wọn Ẹ̀san Olùṣẹ́dá tí àwọn Olùtajà gbé kalẹ̀, tàbí ṣẹ̀dá àtúnṣe tuntun ti Blueprint yìí kí o sì fi sínú Blueprint rẹ gẹ́gẹ́ bí ìsopọ̀ láti pín owó-wíwọlé.