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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.
Kati
A day with annealing and grinding
Maagizo
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.
Vifaa kwa hatua hii:
Fimbo ya Kioo cha Borosilikati4 vipandeZana zinazohitajika:
Kichomeo cha mezani cha kupuliza kioo
Miwani ya usalama
Glavu Zinazostahimili Joto2
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.
Zana zinazohitajika:
Kichomeo cha mezani cha kupuliza kioo
Marver (bamba la kusukuma kioo)Glavu Zinazostahimili Joto3
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.
Zana zinazohitajika:
Tanuru4
4
Cut the slab
Cut the slab
Cut a square of thick glass sheet for the slab.
Vifaa kwa hatua hii:
Bamba la kioo1 kipandeZana zinazohitajika:
Kikata kiooMiwani ya usalama5
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.
Vifaa kwa hatua hii:
Maji2 litaZana zinazohitajika:
Chembechembe za kabidi ya silikoni6
6
Glass for the muller
Glass for the muller
Inapakia daftari la Jupyter…
Vifaa
3- 4 vipandeKishikilia Nafasi
- 1 kipandeKishikilia Nafasi
- 2 litaKishikilia Nafasi
Zana Zinazohitajika
7- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
Mchoro huu unatengeneza
Blueprint zinazohusiana
Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni
CC0 Umma Wote
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