ART
BEAUTY & WELLNESS
CRAFT
CULTURE & HISTORY
ENTERTAINMENT
ENVIRONMENT
FOOD & DRINKS
REVERSE ENGINEERING
SCIENCES
SPORTS
TECHNOLOGY
WEARABLES
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.
Intermediate
Unknown
Instructions
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.
Materials for this step:
Refractory Clay1 piece
Grog (Crushed Fired Pottery)1 piece
Water1 pieceTools needed:
Wooden Paddle2
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.
Tools needed:
Grog (Crushed Fired Pottery)
Unknown MaterialWooden Paddle
Rolling Pin3
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.
Tools needed:
Unknown MaterialWooden Paddle4
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.
Tools needed:
KilnMaterials
3- 1 piecePlaceholder
- 1 piecePlaceholder
- 1 piecePlaceholder
Connected Blueprint Materials
This blueprint makes
CC0 Public Domain
This blueprint is released under CC0. You are free to copy, modify, distribute, and use this work for any purpose, without asking permission.
Support the Maker by purchasing products through their Blueprint where they earn a Maker Commission set by Vendors, or create a new iteration of this Blueprint and include it as a connection in your own Blueprint to share revenue.