IṢẸ́ ỌNÀ
ẸWÀ ÀTI ÌLERA
IṢẸ́ ỌWỌ́
ÀṢÀ ÀTI ÌTÀN
ÌṢERÉ
ÀYÍKÁ
OÚNJẸ ÀTI OHUN MÍMU
REVERSE ENGINEERING
SÁYẸ́ǸSÌ
ERÉ ÌDÁRAYÁ
ÌMỌ̀-Ẹ̀RỌ
ÀWỌN OHUN WÍWỌ̀
Sand Bath in a Sunk Iron Pan
A sand bath is a pan of sand set over the heat. A flask or dish bedded in the sand is warmed on all sides, not just on the bottom. Alchemists already used it. Here a shallow pan is hammered from iron sheet into a hollow and then filled with sieved sand.
The picture: our diagram of a flask bedded in sand in an iron pan over a fire.
Olùbẹ̀rẹ̀
A day
Ìlànà
1
1
Cut the disc
Cut the disc
Scribe a circle on the iron sheet with the dividers and cut it out with the snips. File the edge smooth.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Pẹpẹ irin (tí a lù)1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Kọ́mpàsì olójú méjì
Ìlàǹkàn irin
Ìfá Irin
Ìbọ̀wọ́ wẹ́lídìn2
2
Carve a hollow
Carve a hollow
Gouge a shallow round hollow into the end grain of a hardwood block, about as deep as the pan will be.
Àwọn irinṣẹ́ tí a nílò:
Ìṣù Igi Líle
Ìgbẹ́ igi olójú kòtò
Òòlù Igi3
3
Sink the pan
Sink the pan
Hold the disc over the hollow and hammer it down in rings from the rim toward the centre, turning it as you go. Sinking stretches and thins the sheet, so go evenly. If the iron stiffens, heat it red in the forge and let it cool before going on.
Àwọn irinṣẹ́ tí a nílò:
Ìṣù Igi Líle
Òòlù olórí bọ́ọ̀lù
Ìléru alágbẹ̀dẹ
Ẹmú alágbẹ̀dẹÌbọ̀wọ́ wẹ́lídìn4
4
Flatten the bottom
Flatten the bottom
Planish the bottom flat on the anvil so the pan sits steady over the fire, and file the rim level.
Àwọn irinṣẹ́ tí a nílò:
Ìdí Alágbẹ̀dẹÒòlù olórí bọ́ọ̀lùÌfá Irin5
5
Fill with sand
Fill with sand
Sieve the sand, dry it by heating it in the pan, and leave a layer about 3 cm deep.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Iyanrìn2 kgÀwọn irinṣẹ́ tí a nílò:
Ajọ̀Ìléru alágbẹ̀dẹ6
6
Use it
Use it
Set the pan over the heat and bed the flask or dish partly in the sand. The sand carries the heat to all sides of the vessel.
Àwọn irinṣẹ́ tí a nílò:
Ìbọ̀wọ́ wẹ́lídìn7
7
How big a disc
How big a disc
Ń ṣí ìwé Jupyter…
Ìtọ́nisọ́nà yìí ń ṣe
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