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Clear Porcelain Glaze: Feldspar, Whiting, Kaolin and Flint, Binns 1910
Charles Binns's simplest porcelain glaze (The Potter's Craft, 1910): feldspar 167, whiting 70, kaolin 52 and flint 108 parts, ground fine with water. It fires clear and bright on porcelain at cone 10 to 12 in a reducing fire, and Binns says the same glaze also serves for stoneware.
The picture: a Korean porcelain bottle under clear glaze, Joseon dynasty, c. 1400–1500 (Asian Art Museum, San Francisco; photo by Daderot, Wikimedia Commons, public domain).
Ophakathi
1 day
Imiyalelo
1
1
Powder the feldspar and flint
Powder the feldspar and flint
Pound the feldspar and the quartz sand to powder in the mortar and sift it through the fine sieve. Flint here means silica: Binns uses ground quartz or flint.
Izinto zokwakha zalesi sinyathelo:
Ucezu lwe-feldspar167 g
Isihlabathi Se-quartz108 gAmathuluzi adingekayo:
Isigqulo Nomgqulo
Isisefo Senetha Ecolekile2
2
Weigh the batch
Weigh the batch
Weigh in grams: feldspar 167, whiting 70, kaolin 52, flint 108.
Izinto zokwakha zalesi sinyathelo:
I-calcium carbonate (umcako omhlophe)70 g
Impuphu yobumba be-kaolin52 gAmathuluzi adingekayo:
Isikali sesilinganiso3
3
Grind with water
Grind with water
Grind the batch with half a pint of water. Binns grinds about an hour in a ball mill; by hand in a mortar works too, with fine sieves.
Izinto zokwakha zalesi sinyathelo:
Amanzi250 mlAmathuluzi adingekayo:
Isigqulo Nomgqulo4
4
Sieve and settle
Sieve and settle
Rinse everything out with plenty of water and keep the washings. Strain through a 120-mesh sieve, let it settle, and pour off the clear water.
Amathuluzi adingekayo:
Isisefo Senetha Ecolekile
Ibhakede5
5
Thick as cream
Thick as cream
Use it as thick as cream: a dipped finger comes out with a white coat that will not shake off.
Amathuluzi adingekayo:
IbhakedeIzinto
5- 167 gIsibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- 250 mlIsibambeli
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