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A chalkboard eraser (sometimes known as a duster in India and elsewhere [1] [2]) is a special type of eraser specifically used to erase chalk markings on slating paint (used on chalkboards and slates). It is most commonly made of felt strips attached to a handle. Chalkboard erasers are typically broad and rectangular, intended to clear large ...
Water can dissolve or deform ceramics that have been low fired, i.e., at temperatures around 600°C. Ceramic fired at high temperatures may also have water-soluble mineral constituents, for example gypsum or calcite. Additionally, water may carry solutes that damage ceramics.
With paintings, a variety of organic solvents are used, but the most common solvent is water, often with chelating agents, surfactants or salts to control pH. Applying solutions through tissues, gels and sponges is becoming the norm, due to the level of control offered by holding the cleaning system at the upper surface of the art.
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Chalk carving is the practice and shaping of chalk via carving. This article covers some methods, types of chalk, tools used and the benefits (and ramifications) of this material. The benefits of this material are also its drawbacks. Its main benefit, its softness, makes it very easy to manipulate.
Silicate paints are incombustible and free of organic additives or solvents (DIN 18363 Painting and coating work Section 2.4.1). Silicate paints are highly color-tone stable. As they are solely colored with mineral pigments that do not fade with exposure to UV radiation, the silicate paint coats remain constant in color for decades.
Distempered surfaces can be easily marked and discoloured, and cannot be washed down, so distemper is best suited to temporary and interior decoration. The technique of painting on distempered surfaces blends watercolours with whiting and glue. "The colours are mixed with whitening, or finely-ground chalk, and tempered with size.
Chalk paint may be applied with a brush, roller, or spray gun. [5] The paint should be applied in thin layers and will typically dry within two hours. [3] A topcoat sealer, such as wax or lacquer, should be applied to avoid the flaking of the chalk paint. The topcoats may enhance the decorative characteristics. [1] [2] [3]