Suffice it is widely spread artificial stone in the last few years. So building blocks are decorated with plinths of houses and other buildings. They veneer fences and pergolas, roofs and facades of the tower.
Artificial stone has found application not only in architecture. Its use and designers, for example, when creating exclusive furniture sets.
But this "decoration" you can not buy and make at home. In this article you will learn how to make artificial stone.
Production of formwork
For the manufacture of forms, first of all, the sample is required. Sample can serve as natural stone and artificial plaster or concrete. Form made of silicone. But first it is made under the formwork, which will be filled silicone. Formwork can be built, for example pieces of PVC panels. Dimensions chosen for shuttering stone pattern, wherein oversizes from each side of 4.0 centimeters. Portions formwork collected (glued) with "liquid nail".
Preparation of form
Before proceeding to the silicone casting, it is necessary to put a solid layer of grease on the inside of the casing and tile pattern. If the sample is made of plaster, applying it to the grease to be coated with varnish or lacquer in three layers.
Stone sample should be put into the mold and fill the free space of the liquid silicone cartridges. For the form required universal silicone without the addition of dyes, that is clear.
Depending on the size of the stone may not need to sample one, but several packages of silicone. Thus, for manufacturing a mold for a stone 18h6h2 size (cm) of the cylinder will suffice. For more stone - 20h12h2 (cm) is required for two cylinder. And to ensure that the relevant parameters 25h9h3 (see) you need to buy at least three cans.
When the silicone is completely filled into the mold, it is necessary to take the brush, dip it into the soapy water and walk it over the silicone. Thereafter, the silicone should be literally ram inside. Thus in the form will not have any unwanted voids. The upper part of silicone should trim a wet spatula.
Fill left to dry for about 21 days. To calculate precisely the time when the form completely, you're ready when you consider that the drying rate of the layer thickness of 1 cm is due 7 days.
How to give the stone color
In order to get the desired color of the stone should be painted the inside of the form. Only in this case, the paint is well fall on a stone.
Casting artificial stone should be held in two stages in order to save dyes. The first layer is necessary to do so. First mix the dye with dry sand and then add cement and mix again, and only after all of the dilute water. The ratio of sand and cement - 1 to 3. The dye is required so that it was not more than 3 percent by weight of cement.
The final solution of the first layer should be laid in the mold and compacted. The second layer is prepared without adding a dye. The first layer should make a slight indentation, the solution was dispersed to the edges of the form. The deepening is necessary to put a piece of masking grid. Poured on it a second layer of solution and also ram. In order to further the stone is well stuck to the surface to make it cutting a nail or a notched trowel.
Remove from the mold through the stone will be 12 hours. Use it for its intended purpose only two weeks. During this time, he finally will get stronger. If the stone will be installed on the street, then it should apply a coat of varnish. If, however, it will be installed inside the house, the varnish was replaced with vegetable oil. The oil before application should be preheated to a temperature of 60 - 70 degrees.
Casting plaster is also done in two passes. To plaster not hardened before the time it is added citric acid. Dye for gypsum requires more: no 3 and 5 percent.
After each use, the shape of wash solution soap and a soft brush.