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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
Glass Muller and Slab for Grinding Pigments
Painters and colourmen grind pigment into oil or gum with a muller, a heavy bell of glass or stone with a flat face, rubbed over a slab; Andrew Ure (1839) describes indigo and gold leaf ground this way. Gather glass rod into a solid bell in the flame, anneal it, then grind its face and a glass slab against each other with grit so they bite.
The picture: grinding a red pigment with a glass muller.
Àárín
A day with annealing and grinding
Ìlànà
1
1
Gather the glass
Gather the glass
Melt the end of thick borosilicate rod in the torch and keep feeding rod into the gather, turning, until you have a heavy, bubble-free lump.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Ọ̀pá Gíláàsì Borosilicate4 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ọ̀gọ̀ ìfẹ́ dígí orí tábìlì
Gíláàsì ààbò
Ìbọ̀wọ́ Tí Ń Fara Da Ooru2
2
Shape the bell
Shape the bell
Press the soft lump on the marver to a flat-faced bell and draw the top into a knob to hold. Keep it turning so it stays round.
Àwọn irinṣẹ́ tí a nílò:
Ọ̀gọ̀ ìfẹ́ dígí orí tábìlì
Marver (pẹpẹ ìyí ti dígí)Ìbọ̀wọ́ Tí Ń Fara Da Ooru3
3
Anneal slowly
Anneal slowly
A thick solid piece cracks if it cools fast: put it straight into the kiln at annealing heat, soak it well and cool very slowly.
Àwọn irinṣẹ́ tí a nílò:
Ìléru Ìsun4
4
Cut the slab
Cut the slab
Cut a square of thick glass sheet for the slab.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Àwo dígí1 ẹyọÀwọn irinṣẹ́ tí a nílò:
Ohun ìgé dígíGíláàsì ààbò5
5
Grind them together
Grind them together
Put wet grit on the slab and rub the muller face over it in figure-eights until both surfaces are evenly frosted and flat to each other. Wash clean.
Àwọn ohun èlò fún ìgbésẹ̀ yìí:
Omi2 lítàÀwọn irinṣẹ́ tí a nílò:
Ọkà kaboidi silikoni6
6
Glass for the muller
Glass for the muller
Ń ṣí ìwé Jupyter…
Àwọn irinṣẹ́ tó nílò
7- Àyè
- Àyè
Ìtọ́nisọ́nà yìí ń ṣe
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