For its manufacture, you will need a plastic container for mixing the solution, gypsum (preferably white), shape and pallet under them, a drill with a nozzle, a table and a film for its protection, a corrugated glass for covering forms, water-based dyes.
Usually, a mixture of mineral plaster and anhydrite is used as the starting material. This material becomes the basis of the gypsum "test" - the composition obtained by mixing the powder with clean water.
First, water is poured into the plastic container and white gypsum is added to it, constantly stirring the solution.
Even if in your opinion the solution came thick, it is not necessary to dilute it with water, because the tile of too liquid gypsum is continuing and dries very long.
This "test" should be exactly as much as necessary for filling forms at once, since a long-cooked mixture can not stand and starts to stick. Gypsum mixture is prepared in two receptions. The ratio of plaster and water must be chosen independently, and about 10% of sand or other similar filler can be added to increase the strength of the artificial stone.
Silicone or plastic forms are covered with a special separation composition that makes it easy to remove the stone after drying.
This composition can be prepared independently, mixing the wax in the turbidar in the ratio of 3: 7.
The composition is prepared in the water bath, and after readiness they apply a thin layer with the help of a brush and rub on a cloth on the surface of the form.
After that, the shapes are covered with a thin layer of liquid gypsum with a flat brush. This avoids the formation of shells on the stone.
Forms are placed on the pallet so that after filling the plaster from it was convenient to shone to remove air bubbles.
Mix coloring pigments with some gypsum in separate containers and poured different shades in the mold, imitating the inhomogeneous color of the natural stone.
Then poured the bulk of the gypsum. Running it on the surface of the shape, close the shape of the corrugated glass and neatly shake the tank with the plaster for the uniform distribution of the mass, making smooth circular motions. This process takes about two minutes.
After the glass can be freely separated from the form (usually frozen plaster lasts 15-20 minutes), the product can be carefully removed and dry in air. Silicone forms are quite flexible. Therefore, artificial stone is extracted from them without problems. Thermal treatment of artificial stone is not spending. Since it worsens the performance of gypsum products.
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