What are hot and cold drawing?

Hot painting and cold painting are the oldest wax painting techniques in Europe. They are distinguished by the use of wax medium. Wax suitable for painting is mainly beeswax. The beeswax sold in stores is milky white cake shape or block, soft and delicate, heated to 60℃ can be melted into turpentine, high-grade gasoline and water. Wax paint is suitable for painting on hard supporting materials such as wood, and can also be attached to canvas. The bottom of the canvas is generally a gelatinous base, or it can not be a base, but it can not be painted on an oily base. (1) Thermal drawing Select 8 parts of high quality beeswax, cut into small pieces, add 1 part of Carnuba wax (imported wax, the shape of egg yellow fragments, smooth and hard, can not be used) mixed into a metal container, with fire heating to melt. Then take the same amount of (1∶2) Dama resin varnish to mix together, and divided into a number of small metal boxes, and then a variety of color powder each color of a box respectively stirred in the hot wax solution, you can make different colors of wax color paste. When painting, the color paste box is arranged on a smooth metal plate that can be heated, so that the wax color is kept in a melted state. The paint can be dipped in the color liquid and the color can be mixed on the metal plate, and diluted with turpentine when necessary. The wax color will solidify quickly when applied to the picture, and can be covered in multiple layers. It can also be modified and retouched with a scraper while hot. Modern painters often use auxiliary tools such as a hot hair dryer, a special electric soldering iron, and a heated scraper. As shown in figure 26. After the completion of the wax painting is matte state, available flannelette on the screen polishing. 2) Cold drawing Cold painting method is divided into emulsified wax and saponified wax two medium color mixing method. Emulsified wax: ALSO known as wax cream, the standard preparation method is: take 30 grams of high quality beeswax, put into 250 ml boiling water to dissolve, add 15 ~ 20 grams of ammonium carbonate (can be dissolved with a little warm water first), boiling bubble after stirring, until the bubble disappears, can be made bean curd brain shape wax cream. When painting, use 4 parts wax cream +1 part latex (or animal glue, casein glue, etc.) to mix the color powder. Saponified wax: PUT 1 part beeswax and 3 parts turpentine in a wide mouth bottle, seal it, heat the beeswax with water to dissolve in turpentine, then add (1∶2) DAMa polishing oil to mix the pigment powder. Cold painting works better on canvas and paper than HOT painting, but cold WAX painting, if polished, is best painted on wooden boards with a plaster base.