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ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
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ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Forged Steel Dividers with a Riveted Joint
Dividers are a compass with two steel points: set them to a distance and step it off along a line, transfer it from a rule to the work, or scratch a circle. Forge two matching legs, rivet them at a stiff joint so they hold a setting, and harden the points.
The picture: steel spring dividers set with a screw; the ones made here hold their setting by a stiff riveted joint instead.
Àárín
A day
Ìlànà
1
1
Forge two legs
Forge two legs
Draw two equal tapered legs from tool-steel bar, each with a flat round boss at the top. Forge the bosses thin so they overlap to the thickness of one leg.
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
Ẹmú alágbẹ̀dẹ
Ìbọ̀wọ́ wẹ́lídìn
Gíláàsì ààbò2
2
File and pair
File and pair
Anneal, file the legs straight and equal, and file the bosses flat so they sit face to face. Drill them together through the middle.
Àwọn irinṣẹ́ tí a nílò:
Ìfá Irin
Ìlù ọwọ́
Ìdíwọ̀n3
3
Rivet the joint
Rivet the joint
Put a rivet through, peen it over until the legs move stiffly but evenly, so they keep a setting without slipping.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ìṣó irin1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Òòlù olórí ìtẹ̀ ìpakàÌdí Alágbẹ̀dẹ4
4
Harden the points
Harden the points
Heat the last few centimetres of each point to cherry red and quench; polish and temper to brown. Stone both points sharp and to the same length.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Omi5 lítàÀwọn irinṣẹ́ tí a nílò:
Ìléru alágbẹ̀dẹ
Àpótí ìtutùẸmú alágbẹ̀dẹ
Òkúta ìpọ́n grit 1000Ìbọ̀wọ́ wẹ́lídìnGíláàsì ààbò5
5
Stepping off a length
Stepping off a length
Ń ṣí ìwé Jupyter…
Àwọn ohun-èlò
4- Àyè
- 1 as requiredÀyè
- 1 ẹyọÀyè
- 5 lítàÀyè
Ìtọ́nisọ́nà yìí ń ṣe
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