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 Geologist's Pick
A geologist's pick of about 2½ pounds, with a square striking head on one side of the eye and a long curved point on the other, forged from 1¼ × 1¾-inch tool steel. After the eye is punched, the bar is cut part way through beside it with a hot chisel and the waste cut away, then each end is drawn out, under a power hammer in the original. The point is hardened like a cold chisel and tempered to dark blue; the head is then hardened about 2 inches back and tempered to brown or dark straw, with damp coal round the point so it is not softened again.
Ilọsíwájú
4–6 hours
Ìlànà
1
1
Mark and punch
Mark and punch
Mark the stock with a centre punch and chisel, and punch the hole for the eye.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá pẹlẹbẹ irin irinṣẹ́1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Igi Àmì Àárín
Ìléru alágbẹ̀dẹ
Ìdí Alágbẹ̀dẹ
Ohun ìlu ihò gbígbóná
Ẹmú alágbẹ̀dẹ2
2
Cut beside the eye
Cut beside the eye
With a drift in the eye, flatten the sides. Cut part way through 3/16 inch from the edge of the hole on both sides, round the bottom of the cuts with a thin fuller, and cut out the waste.
Àwọn irinṣẹ́ tí a nílò:
Ohun ìfẹ̀ ihò
Ìlù gbígbóná
Fuller (irin ìgbẹ́ ìlà)3
3
Draw out the ends
Draw out the ends
Draw out one end, cut the pick from the bar, then draw out the other end to the point's form.
Àwọn irinṣẹ́ tí a nílò:
Òòlù tí a ń jù sílẹ̀
Òòlù ńlá4
4
Finish the head and point
Finish the head and point
With the drift in the eye, smooth around it with a set hammer. Finish the head with set hammer and flatter and cut it square from four sides; finish the point with a flatter and cut it to length. Grind face and point.
Àwọn irinṣẹ́ tí a nílò:
Òòlù ìtẹ̀ èjìká
Ohun èlò ìpẹ́rẹ́
Ìlù gbígbóná
Ẹ̀rọ ìfá orí tábìlì5
5
Harden and temper
Harden and temper
Harden the point like a cold chisel and temper it to dark blue. Then heat about 2 inches of the head, keeping damp coal around the point, harden it the same way and temper it to brown or dark straw.
Àwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹ
Àpótí ìtutù
Ẹmú alágbẹ̀dẹ
Aṣọ emery6
6
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.
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