Papier Mache, the pulp of paper mixed with glue or gum arabic, moulded, and dried, or paper pasted in sheets upon models. The cheaper articles of papier mache are made of white or brown paper mashed in water and pressed in oiled moulds. The better articles are produced by pasting or gluing together sheets of paper, which, when a proper degree of thickness is attained, are powerfully pressed and dried. While moist the preparation may be moulded into any form, and when dry it may be planed and rasped to shape. Several coats of varnish are next applied, and the inequalities are rubbed down with pumice stone. It is ornamented with gold, bronze powder, or colors, after which a varnish of shell lac is applied and dried at a temperature of 280°. A brilliant surface is obtained by polishing with rotten stone and oil, and by hand rubbing. For architectural ornaments, the sheets of paper prepared in layers with glue are pressed into metal moulds. "When removed, a composition of paper pulp mixed with rosin and glue is put into the moulds, and the paper impressions being again inserted, the composition adheres to them permanently.
Cartonpierre ornaments are similarly prepared, whiting being used in place of rosin, and are lighter and more durable than plaster of Paris. Papier mach6 is rendered to a great extent water-proof by mixing with the pulp a preparation of sulphate of iron and glue, and nearly fire-proof by adding to this borax and phosphate of soda. - Papier mach6 is now used as a substitute for other materials in interior decorations. From a model made in clay'or plaster a plaster mould is taken, into which a thin layer of the finest pulp is poured, which is backed by a thick, coarser pulp, generally made of bamboo. The casts are so strong that they can be made of great extent, and screwed to the walls or ceilings. When mixed with clay, glue, and an alkali, the material is fire-proof; and if silicates are added, it is impervious»to moisture. One of the most important properties of papier mache is the rapidity with which moulds can be taken with it from type, whereby the stereotyping of daily newspapers has been rendered possible and common. (See Printing).