Читать книгу A Manual of Mending and Repairing; With Diagrams онлайн
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Crockery, or Faïence, and Porcelain.—“Crockery,” by which we commonly understand such ware as that of the blue willow plates, is far superior to terra-cotta, since its core or basis is thin, and very hard, and its gloss of a different description, and more incorporated with the body; or it is of a single superior body.
Porcelain differs entirely from the other two kinds of fictile ware, being an elaborate mineralogical compound, its base being kaolin, a friable, white, earthy substance, requiring great care in its preparation, and petunse, or feldspar, which is united with the kaolin. The result is a very delicate and beautiful diaphanous ware, or one through which light passes to a limited degree. Both crockery and porcelain are far more difficult to mend, owing to the impossibility—particularly with the latter—of making fractures disappear.
The first and most simple process of mending both kinds of ware is to make small holes with a drill along the edges of the fracture, and then, adjusting the fragments, bind them together with wire. M. Ris-Paquot claims that “the honour of this discovery belongs properly to a humble and modest workman named Delille, of the little village of Montjoye, in Normandy.” But the archæologist will say of this claim, as the English judge did of a similar one, that the plaintiff might as well apply for a patent for having discovered the art of mixing brandy with water, since there was probably never yet a savage who had wire, or even string, who did not know enough to mend broken calabashes, jars, and pipes by this solid method of sewing. From the time when large earthen punch-bowls were first used in Europe, we find them mended with silver wire. It is needless to devote whole pages with illustrations, as M. Ris-Paquot has done, to show how to effect such mending. The holes are made with either a bore or hand drill, such as can be bought in every tool shop. If the reader will obtain one and experiment with it on any penny plate or broken fragment, he will soon master all the mystery. The wire is made fast by a turn with a pair of nippers or pincers. Before fastening, wash the edges of the ware with white of egg in which a very little whiting, or finely powdered lime or plaster of Paris, has been mixed.