How to Make English Porcelain

One Methods:To make Porcelain, or China

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  1. 1
    Roast the iron-stone, which contains a portion of argil and silex, in a common biscuit-kiln, to facilitate its trituration, and to expel sulphur and other volatile ingredients which it may contain.
  2. 2
    Construct a large earthen crucible after the exact model of an iron forge.
  3. 3
    Fill a part of the bottom with charcoal or cokes; these having been previously strewed with ore and about 1/3 part of lime
  4. 4
    Raise the mixture to an intense heat by a strong blast of air, introduced under the cokes at the bottom. By this heat the ore is fused, and the fluid iron drops through the fuel to the bottom. Next follows the scoria, which floats atop the fluid iron. This latter scoria, or, as the workmen call it, slag, is the material used in the manufacture of china. The slag is compact and dense and is heavily impregnated with iron.
  5. 5
    Let off the slag to cool through a hole through the forge, into a clean earthen vessel.
  6. 6
    Break this last vessel in order to detach the slag from it, with hammers.
  7. 7
    Pound the scoria into small pieces and grind it in water to the consistence of a fine paste. This paste is then evaporated to dryness on a slip-kiln, well known amongst potters.
  8. 8
    Mix the dried paste with the following:
  9. 9
    Prepared iron-stone, 3 cwt.; ground flint, 4 cwt.; ground Cornwall stone, 4 cwt.; Cornwall clay, 4 cwt.; blue oxide of cobalt, 1 lb.
    • Once these are mixed together with water by the slip-maker, they are again evaporated on the slip-kiln to the proper consistency for use. The resulting clay is then used in the usual manner in the fabrication of the several kinds of vessels.

To make Porcelain, or China

  1. 1
    Select the clay, wash out impurities and dry it again.
  2. 2
    Sift the dried clay finely.
  3. 3
    Mix with finely ground quartz and some burnt and finely-pulverized gypsum.
  4. 4
    Work this mass with water to a paste and knead.
  5. 5
    Fire to bisque to prepare for glazing.
  6. 6
    Glaze the porcelain. After drying, each article is thoroughly baked or burned in the violent heat of the porcelain furnace. It is usual to decorate porcelain by paintings.

Things You'll Need

  • A source of fine quality clay and other earth and minerals.
  • A porcelain kiln (very high temperatures)
  • Molds or pottery wheel.

Article Info

Categories: Clay Projects