Rustami name is artificial the flutes created in plaster or platens. For example, rusty do on facades at cutting.pod a natural stone, at oshtukaturivanii walls of staircases, at furnish of the ceilings mounted from modular ferro-concrete floorings.
The Tool which cut rusty, name rustovkoj, or rasshivkoj. The elementary rustovka represents a wooden template with the flute cut out on a directing plane or the platen is depends on the demanded form rusta.
Professional builders, as a rule, do not use for a long time wooden rustovkami, they were replaced by the dural.
In the practice I have twice improved this tool. At first on base dervjannoj rustovki has created more convenient universal to which can pull both a flute, and the platen (fig. 52). Here a wooden platform in the size 240X 100 mm form the basis 1. In the middle of it the wooden vertical rack in the size 170x25x100 mm which is fastened in addition to the basis two wooden podkosami in diameter 15 mm in section is strengthened. On the one hand racks strengthen on bolts a metal plate with a ledge 4, with another - a plate having a semicircular groove 5. The first serves for rasshivki the flutes, the second-for vytjagivanija the platen. The rack parties on which cutting plates fasten, upholster with metal strips. The sizes such rustovki 240x195x100 the mm also weighs it no more than 250
a Fig. 52. Universal rustovka for flute and platen furnish :
1 - the basis; 2 - a rule; 3 - handles; 4 - a steel plate for vytjagivanija bent rusta (flutes); 5 - a steel lath for vytjagivanija convex rusta (platens); 6 - screws
But nevertheless this adaptation is bulky. And I am fast from it have refused, having made of duralumin easier rustovki - separately for each operation. Rustovka on the ends of a metal strip has two acting platens for flute sample rusta (fig. 53) or two similar plates, but having on a working part a semicircular groove. Rustovka can serve also for installation directing rejki.
a Fig. 53. Rustovka for flute sample
It is much more difficult to process rusty on ceilings. In modern industrial buildings ferro-concrete overlappings smooth enough. If overlapping in the size on a room then shtukaturu at all there is nothing. If the ceiling is collected from several ferro-concrete floorings between them there are seams which cannot be left not finished.
It would Seem, than that is easier: to fill a joint with a solution, to jam it better - and it's done. However to do it in no event it is impossible.
To Hide a seam it will not be possible, on a ceiling there will be a careless strip. Therefore builders, on the contrary, underline a joint, embroider it. Only thus it is necessary to achieve that on all length rust represented an accurate and equal line. To achieve it without special adaptations very hardly. It was possible to develop such adaptations, which steels everywhere to apply. The complete set includes telescopic racks (fig. 54), rustovki, dural graters with penoplastovym and porolonovym a covering.
a Fig. 54. A telescopic rack
The Rack serves for fastening on a ceiling directing reek. Make it of dural pipes. Two pipes in diameter of 30 mm and - such that it could come in first two are necessary the third smaller diameter and connect them with each other. The top and connecting pipes have four apertures through which pass the fixing probe when it is necessary to move apart a rack on certain height. In the bottom of a rack a basic heel, and above - a screw jack with a clamping lath.
Rustovka represents a dural cloth in the size 270x70 mm. Cloth edges are unbent upwards - they slide on directing rejke. In the middle of a cloth priklepana the handle, and cuts, in them priklepany steel knifes of the semicircular form in radius of 8 mm are along the edges formed. If the knife is located by sphere downwards, it will cut a rust-flute. In most cases such rustovkoj also use shtukatury.
The Platen - convex rust instead of a flute - pull only when plates for any reasons have appeared laid with some difference in a horizontal plane. The flute here is not necessary, she only underlines difference, and the platen will hide this defect.
Cutting rustov is conducted by two workers. Two little tables of the dresser, a step-ladder, three telescopic racks, wooden rejka, two boxes for a solution, two brushes, two masterka, two dural graters with penoplastovym and porolonovym a covering, rustovka, podshtopka, two buckets are necessary to them.
Work begin with a mark of axial lines rustov on opposite walls.
Then do a notch of an edge of plates, clear them, moisten with water, if necessary prokonopachivajut seams.
Fill a seam with a cement mortal (1:3), filtered through a sieve with cells of 1 mm. A plane rub clean at first penoplastovoj, and then porolonovoj graters.
The Following operation-installation on risks directing rejki and fastening by telescopic racks. For all length of a ceiling enough two-three racks. The worker conducts rustovku on directing rejke, rustovka rests against it one board. Two knifes on the ends rustovki provide the big straightforwardness of a flute.
It is necessary to remember: if you use a cement mortal (1:3) prorezku rusta it is possible to begin only through 1... 2 ch from the moment of seam filling.
It is possible to avoid such loss of time. With that end in view I began to apply to seam filling bystro-seizing gipsotsementnyj a solution. On a water bucket (10 it is necessary to take 1 part of plaster, 4... 5 parts of a dry cement mix and 1000 g polivinilatsetatnoj emulsii (PVA). A dry mix and plaster mix and filter. A solution prepare in the small portions, counting on one rust.
By means of a brush moisten a joint with water where add emulsiju PVA. Fill a seam with a solution, rub clean penoplastovoj or porolonovoj a grater. Strengthen directing rejku and at once embroider rust. Need for the subsequent shpaklevke at this way disappears.
It is necessary to tell in summary about a way rasshivki rustov on ceilings of industrial buildings, where height of walls considerable - 3... 10 m. Here rejki you will not establish.
As a rule, to overlappings here apply spherical plates with acting edges. These edges also can serve directing for rasshivki a seam between joints of plates. Rustovka it is thus necessary special - bezreechnaja (fig. 55). it Becomes also from djuralja in the size 300X120 mm. One of sides in width of 40 mm is unbent. In an average part cuts in which knifes fasten are made. Here again, putting the necessary knifes, it is possible to cut a flute or to pull the platen.
a Fig. 55. Dural bezreechnye rustovki
Can happen so that plates of overlappings will be laid roughly, with differences. In that case it is necessary to make rustovku which coat hanger of a cloth has different height. And to do not a flute, and to pull the platen.