Before buying paint, each gun owner should carefully read the information on the label, paying particular attention to the “Application” section. It is in this section that the methods of application are listed – brush, roller or spray. If the marking on the box allows you to spray, then you can safely buy the box.
What paints are suitable for the spray gun
For professional painting and creating an even decorative layer, you can use any type of paint and varnish compositions.
The main thing is that the type of composition corresponds to the type of coating to be painted, and there is a special marking on the bank.
If there is no marking, the methods of application must be indicated in the sections “Application” or “Methods of application”. When reading these sections, look for the words “spray applied”. This means that the paint is quite runny and can be poured into the spray gun tank.
For spraying, you can buy the following types of paints:
- acrylic (for drywall, wallpaper, wood, fiberboard, particleboard, concrete, or metal; these paints are made from synthetic polymers);
- water-based compositions (for painting ceilings, walls and facades of houses; they are based on non-toxic aqueous solutions without a strong smell and harmful impurities),
- compositions of alkyd oils based on drying oil, resins, pigments and organic solvents,
- lacquer-based enamels;
- varnishes and other finishes.
In addition to paints, the spray gun can be used to apply adhesive primers and coatings, antiseptics, antifungals, bioprotective compounds and solutions that increase the fire resistance of wooden structures.
Using an airbrush, you can quickly prepare the surface for painting, create a thin, even layer without smudging, and also save paint while working. Compared to a brush or a roller, the spray gun is more resistant to painting large areas, does not leave streaks. The main thing is to properly dilute the paint, not forgetting the advice of the manufacturers.
The spray gun’s instructions for use indicate the viscosity requirements (they are indicated in DIN units). Before starting work, you should carefully read the instructions and, if necessary, dilute the coloring matter.
It is very important to choose the optimum viscosity. Too thick a consistency does not adapt well to the surface, dries long and too thinned does not give layer thickness, has poor covering characteristics, spreads and accumulates in drops.
Before painting, it is necessary to do a color test, let it dry and visually assess the result. If the liquid does not fit well and looks like it has thickened, it needs to be diluted. How exactly to dilute it is indicated on the box label.
The most commonly used solvents are:
- acetone (for compositions with organic and epoxy resins),
- xylene (for epoxy and other types of resins),
- solvent (for varnish),
- gasoline (for enamels and oil paints),
- turpentine (for oil and alkyd paints),
- white spirit (for varnishes, enamels and oil paints),
- R-4 (for dyes with polyacrylate and PVC),
- 646 (for epoxy and acrylic varnishes),
- 647 (for nitro varnishes and nitro enamels).
Water-based formulations are diluted with water.
When the painting is finished, the spray gun is washed with the same agent that was used to dilute the contents of the can.
The quality of the paint depends on the viscosity of the coloring matter. In order to professionally paint surfaces with an airbrush, it is necessary to correctly choose a solvent, gradually dilute the paint, do paint tests and thoroughly clean the airbrush after work.