
A rubbing (''
frottage'') is a reproduction of the
texture of a surface created by placing a piece of paper or similar material over the subject and then rubbing the paper with something to deposit marks, most commonly
charcoal
Charcoal is a lightweight black carbon residue produced by strongly heating wood (or other animal and plant materials) in minimal oxygen to remove all water and volatile constituents. In the traditional version of this pyrolysis process, cal ...
or
pencil but also various forms of blotted and rolled ink,
chalk,
wax, and many other substances. For all its simplicity, the technique can be used to produce blur-free images of minuscule elevations and depressions on areas of any size in a way that can hardly be matched by even the most elaborate, state-of-the-art methods. In this way, surface elevations measuring only a few thousandths of a millimeter can be made visible.
Uses

Common uses for this technique include:
*
Brass rubbing, to make copies of
monumental brass
A monumental brass is a type of engraved sepulchral memorial, which in the 13th century began to partially take the place of three-dimensional monuments and effigies carved in stone or wood. Made of hard latten or sheet brass, let into the paveme ...
es
*
Forensic uses, including finding out what was written on a sheet of paper removed from a pad by rubbing the impressions left on subsequent sheets or other backing materials
* Frottage (from French ''frotter'', "to rub"), a
surrealist art form; a method of creative production developed by
Max Ernst. The artist places a piece of paper over an
uneven surface, then marks the paper with a drawing tool (such as a
pastel
A pastel () is an art medium in a variety of forms including a stick, a square a pebble or a pan of color; though other forms are possible; they consist of powdered pigment and a binder. The pigments used in pastels are similar to those use ...
or
pencil), thus creating a rubbing. The drawing can be left as it is or used as the basis for further refinement. It was developed by
surrealist artist
Max Ernst in 1925. Ernst was inspired by an ancient wooden floor where the grain of the planks had been accentuated by many years of scrubbing. The patterns of the graining suggested strange images to him. He captured these by laying sheets of paper on the floor and then rubbing over them with a soft pencil.
*
Stone rubbing, to make copies of patterns and inscriptions of gravestones or other incised or textured stone surfaces
See also
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Surrealist techniques
Surrealism in art, poetry, and literature uses numerous techniques and games to provide inspiration. Many of these are said to free imagination by producing a creative process free of conscious control. The importance of the unconscious as a sou ...
References
Bibliography
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External links
Artistic techniques
Forensic techniques
Rubbing (art)
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