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Mucilage mixed with water has been used as a glue, especially for bonding paper items such as labels, postage stamps, and envelope flaps. [7] Differing types and varying strengths of mucilage can also be used for other adhesive applications, including gluing labels to metal cans, wood to china, and leather to pasteboard. [8]
Hand-colouring with watercolours requires the use of a medium to prevent the colours from drying with a dull and lifeless finish. Before the paint can be applied, the surface of the print must be primed so that the colours are not repelled. This often includes prepping the print with a thin coating of shellac, then adding grit before colouring ...
In the gilding process, the silver, gold or other metal leaf is fixed using a gelatin adhesive which, after steaming, results in a mirror-like, reflective finish. The design can be applied by various techniques, often by reverse painting prior to gilding, or by engraving the design into the gilded layer, or even into the glass.
The making of orotone prints was a contemporary art in the early twentieth century. Orotones are often to be seen in interiors associated with the Arts and Crafts movement . Many of these orotones are by the Seattle photographer Edward S. Curtis , who produced hundreds of orotone photographs of Native Americans during his career.
Some metals, such as platinum or gold, can protect the image. Others, such as iron (blue toner) or copper (red toner), may reduce the life of the image. [citation needed] Metal-replacement toning with gold alone results in a blue-black tone. It is often combined with a sepia toner to produce a more attractive orange-red tone.
Agfacolor. Ap-41 process (pre-1978 Agfa color slides; 1978-1983 was a transition period when Agfa slowly changed their color slide films from AP-41 to E6); Anthotype; Autochrome Lumière, 1903
Other gilding processes involved using the gold as pigment in paint: the artist ground the gold into a fine powder and mixed it with a binder such as gum arabic. The resulting gold paint, called shell gold, was applied in the same way as with any paint. Sometimes, after either gold-leafing or gold-painting, the artist would heat the piece ...
Other processes which use silver halide but in various different ways other than the typical silver-gelatin formula, such as Salt Print Any number of processes which use more exotic materials, such as uranium chloride , gold chloride , and any number of other salts to directly or indirectly generate a photographic print