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ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Copper Wire Drawn Through a Drawplate
Wire is pulled, not rolled: a tapered rod is drawn through a hardened steel plate with a row of shrinking holes, one hole at a time, getting thinner and longer each pass. Drawing hardens copper, so it is annealed every few holes. Jewellers and electricians' forebears made all their wire this way.
Àárín
Half a day
Ìlànà
1
1
Make a rod
Make a rod
Forge cast copper into a round rod a little larger than the drawplate's largest hole, annealing as it stiffens.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ìṣù Bàbà100 g
Omi10 lítàÀwọn irinṣẹ́ tí a nílò:
Ìdí Alágbẹ̀dẹ
Òòlù olórí ìtẹ̀ ìpakà
Ọ̀pá Iná Pùróféènì
Ẹmú alágbẹ̀dẹ
Àpótí ìtutù2
2
Taper the end
Taper the end
File the first 2 cm of the rod to a long taper so it pokes through the hole.
Àwọn irinṣẹ́ tí a nílò:
Àkójọ Ìfá
Ìdìmú Tábìlì3
3
Set up the plate
Set up the plate
Clamp the drawplate in the vise with its tapered side facing you. Rub beeswax on the rod as lubricant.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ìdí Oyin5 gÀwọn irinṣẹ́ tí a nílò:
Àwo ìfàokùn irinÌdìmú Tábìlì4
4
Draw
Draw
Push the taper through the first hole that it does not slip through, grip it with the draw tongs and pull it through in one steady pull, straight out from the plate.
Àwọn irinṣẹ́ tí a nílò:
Ẹmú ìfàgùnÀwo ìfàokùn irin
Ìbọ̀wọ́ Iṣẹ́ Awọ5
5
Next holes, and anneal
Next holes, and anneal
Draw through each smaller hole in turn. Every three or four holes, coil the wire, anneal it to a dull red and quench.
Àwọn irinṣẹ́ tí a nílò:
Ọ̀pá Iná Pùróféènì
Bíríkì aládùúró-ináÀpótí ìtutù6
6
Measure and coil
Measure and coil
Stop at the size you need, measured with the caliper. Clean, coil and anneal for soft wire.
Àwọn irinṣẹ́ tí a nílò:
Òṣùwọ̀n Kálípà Díjítà Ìnṣì 67
7
Troubleshooting
Troubleshooting
Wire drawing troubleshooting.
Flow
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Àwọn irinṣẹ́ tó nílò
12- Àyè
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