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Sagger: a Fireclay Box Moulded Round a Wooden Mould (Bourry, 1911)
The kiln box that shields ware from flame and soot: a fireclay-and-grog slab beaten flat, rolled round a wooden mould for the wall, joined to a slab bottom by hand, then dried and burned. Saggers stack in piles with wads of soft fireclay between.
Usually oval, sometimes square or rectangular; size to suit the ware.
Source: Emile Bourry, A Treatise on Ceramic Industries (1911), pp. 233, 352-356. Unknown: proportions, sizes, firing temperature. Picture: Fig. 173 of the book.
Katamtaman
Unknown
Mga Tagubilin
1
1
Make the body
Make the body
Mix fireclay with as much grog as possible, of fairly coarse grain, coarse and fine together, into a firm body. Not given: proportions.
Mga materyales para sa hakbang na ito:
Luwad na Matibay sa Apoy1 piraso
Chamota (dinurog na hinurnong palayok)1 piraso
Tubig1 pirasoMga kailangang kasangkapan:
Sagwan na kahoy2
2
Beat out the slabs
Beat out the slabs
Dust a table with grog and fix four rules on it as thick as the slab. Mould slabs of the body by hand between them, firm enough to be shaped roughly by striking with a wooden bat, then smooth them.
Mga kailangang kasangkapan:
Chamota (dinurog na hinurnong palayok)
Hindi kilalang materyalSagwan na kahoy
Rodilyo3
3
Form the sagger
Form the sagger
Roll a slab round a wooden mould whose outside is the inside shape of the sagger. Stand the mould on a second slab for the bottom and join the two by hand. Strike the body so it lengthens slightly and comes loose, and draw the mould off upward.
Mga kailangang kasangkapan:
Hindi kilalang materyalSagwan na kahoy4
4
Dry and burn
Dry and burn
Dry it slowly, then burn it as fireclay goods are burned. In use, stack saggers in piles with wads of thin fireclay between them to seal and steady them.
Mga kailangang kasangkapan:
PugonMga Materyales
3- 1 pirasoPlaceholder
- Placeholder
- 1 pirasoPlaceholder
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