UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
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.
Hagati
Half a day
Amabwiriza
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.
Ibikoresho by'iyi ntambwe:
Ikibumbe cy'umuringa100 g
Amazi10 litiroIbikoresho bikenewe:
Ingoyi
Inyundo ifite umutwe utambitse
Itara rya Propane
Amafashi y'umucuzi
Indobo yo gukonjesha2
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.
Ibikoresho bikenewe:
Amakariso Menshi
Ifatiro ry'Ameza3
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.
Ibikoresho by'iyi ntambwe:
Igishashara5 gIbikoresho bikenewe:
Urubaho rwo gukurura insinga rw'icyumaIfatiro ry'Ameza4
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.
Ibikoresho bikenewe:
Koleyo yo gukurura insingaUrubaho rwo gukurura insinga rw'icyuma
Uturindantoki tw'uruhu tw'akazi5
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.
Ibikoresho bikenewe:
Itara rya Propane
Itafari ryihanganira umuriroIndobo yo gukonjesha6
6
Measure and coil
Measure and coil
Stop at the size you need, measured with the caliper. Clean, coil and anneal for soft wire.
Ibikoresho bikenewe:
Ikigereranyo cya Digitale cy'Amasentimetero 67
7
Troubleshooting
Troubleshooting
Wire drawing troubleshooting.
Flow
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Ibikoresho
3- 100 gUmwanya
- 10 litiroUmwanya
- 5 gUmwanya
Ibikoresho bikenewe
12- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
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