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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.
Ophakathi
A day
Imiyalelo
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).
Izinto zokwakha zalesi sinyathelo:
Insimbi yokukhandwa eyinduku2 izicucu
Amalahle3 as requiredAmathuluzi adingekayo:
Iziko lomkhandi wensimbi
Insimbi Yokukhandela
Isando esinekhanda elimise okwesikhonkwane
Udlawu lomkhandi wensimbi
Amagilavu okushisela
Izibuko zokuphepha2
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.
Amathuluzi adingekayo:
Iziko lomkhandi wensimbi
Insimbi Yokukhandela
Isando esinekhanda elimise okwesikhonkwane
Imbiza Yobumba Emelana Nomlilo
Amagilavu okushisela
Izibuko zokuphepha3
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.
Izinto zokwakha zalesi sinyathelo:
Izipikili zensimbi1 ucezuAmathuluzi adingekayo:
Isibhobozi esishisayo
Isikhulisi sembobo
Insimbi Yokukhandela
Isando esinekhanda elimise okwesikhonkwane
Udlawu lomkhandi wensimbi
Amagilavu okushisela
Izibuko zokuphepha4
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.
Amathuluzi adingekayo:
Iziko lomkhandi wensimbi
Imbiza Yobumba Emelana Nomlilo
Isando esinekhanda elimise okwesikhonkwane
Insimbi yokuhlikihla izinsimbi
Amagilavu okushisela
Izibuko zokuphepha5
5
Can the tongs hold the load?
Can the tongs hold the load?
Ilayisha incwadi ye-Jupyter…
Izinto
3- 2 izicucuIsibambeli
- 3 as requiredIsibambeli
- 1 ucezuIsibambeli
Amathuluzi Adingekayo
10- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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