UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
Crucible Tongs Forged with Curved Jaws
Crucible tongs are scissor-like tongs whose arms curve outward near the ends, so the jaws close round a crucible. Long handles keep the hands away from the heat. Forge two iron reins, curve the jaws to fit your crucible, punch the pivot and rivet them together.
The picture: a melting furnace with its crucible, tongs and ingot moulds.
Hagati
A day
Amabwiriza
1
1
Forge the reins
Forge the reins
Forge two matching reins from wrought iron bar, each with a flat boss for the pivot, a jaw beyond it and a long handle, about 60 cm (our length).
Ibikoresho by'iyi ntambwe:
Umugozi w'icyuma cyacuzwe2 ibice
Amakara3 as requiredIbikoresho bikenewe:
Uruganda rw'umucuzi
Ingoyi
Inyundo ifite umutwe utambitse
Amafashi y'umucuzi
Uturindantoki two gukomeza ibyuma
Amadarubindi y'umutekano2
2
Curve the jaws
Curve the jaws
Bend each jaw outward and then back in, so that the two together make a rounded opening. Check it against the crucible you will lift.
Ibikoresho bikenewe:
Uruganda rw'umucuziIngoyiInyundo ifite umutwe utambitse
Ikirahure cy'Ibumba Rirwanya UmuriroUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano3
3
Punch and rivet
Punch and rivet
Punch and drift a pivot hole in each boss, set the reins together, and rivet them hot so they move freely.
Ibikoresho by'iyi ntambwe:
Ibyuma byo guhambira1 igiceIbikoresho bikenewe:
Igitobora gishyushye
Igikoresho cy'umucuzi cyagura umwoboIngoyiInyundo ifite umutwe utambitseAmafashi y'umucuziUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano4
4
Fit to the crucible
Fit to the crucible
Heat the jaws and close them on a cold crucible so they take its shape and grip it all round. File off sharp edges on the handles.
Ibikoresho bikenewe:
Uruganda rw'umucuziIkirahure cy'Ibumba Rirwanya UmuriroInyundo ifite umutwe utambitse
Ikariso ry'IcyumaUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano5
5
Can the tongs hold the load?
Can the tongs hold the load?
Gupakira ikaye ya Jupyter…
Ibikoresho
3- 2 ibiceUmwanya
- 3 as requiredUmwanya
- 1 igiceUmwanya
Ibikoresho bikenewe
10- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
Iki gishushanyo gikora
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