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.

中级

Unknown

说明

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.

此步骤所需材料：

耐火黏土1 个

熟料（碎烧结陶片）1 个

水1 个

所需工具：

木桨

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.

所需工具：

熟料（碎烧结陶片）

未知材料

木桨

擀面杖

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.

所需工具：

未知材料

木桨

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.

所需工具：