Art Casting Plaster

Art Casting of models in the form of excavation – it is the easiest way to get castings. Briefly technology is this: on the desired template (model) of forming the shape of the land is made for pouring molten metal. The shape made on a particular pattern – single: when digging the casting it is destroyed as created from a mixture of sand and clay (25% of the content in a mixture of clay, 75% – sand). But the very mixture for the mold can be used repeatedly, updating only the inner lining layer. A template can be made from any material – clay, gypsum (the most acceptable and comfortable materials), wood, plastic, metal. The model can serve very detail, and if you need to do the same (to restore its original form), then restored by clay build up or restore the missing parts of the initial sample. If for some reasons can not be used as a model plasticine replica of the original, after all spine out: You can make a plaster cast from the original (though this is more time-consuming and troublesome way). The process of obtaining a plaster product model is as follows: the original is placed face up on a flat plate in a frame of wood or other material, with the side frame must be above the copied articles and inside lubricated lather.

Gypsum is dissolved in a rich amount of water to the state of the liquid creamy mass. In the fast paced original carefully covered with a layer of liquid plaster, causing its wide paint brush, and then fill the frame plaster solution to the brim. Can accelerate or retard the setting of gypsum: In the first case, you need an additive 4% solution of sodium chloride, in the second – 1% acetic acid. Next, a plaster mold (mold) is dried at a temperature not exceeding 50 C, treated in kontrrelefe, increasing as necessary relief, smooth ledges, close up the shell.