The general essentials of using spray gun to repair spraying technology

1. Hold the gun. The spray gun is held by the palm, thumb, little finger and ring finger. The middle and index fingers are used to pull the trigger. Some painters work for a long time and change the way they hold the gun from time to time. Sometimes they only use the thumb and the palm with the little finger, and sometimes the ring finger is used to hold the gun. The middle and index fingers are used to pull the trigger. This can relieve fatigue and improve labor efficiency.
2. The orientation of the spray gun to the surface of the substrate. The spray gun should be vertical to the surface of the substrate, or as vertical as possible. If the spray gun is a little skewed, the result will inevitably cause the spray band to flow to one side, while the other side appears dry and thin, lacking paint, which is very likely to cause streak-like coating.
3. The distance from the spray gun to the surface of the substrate. For siphon spray guns, the best working distance is 15~20cm. If the distance is too close, flow may occur, and the color may even be inconsistent with the expected when spraying metallic flash paint or pearl paint. If the distance is too far. If it exceeds 20cm, it may lead to dry spraying and overspraying, which will worsen the leveling of the coating. If you spray metallic flash paint, there may also be the possibility of color change. The pressure feed spray gun can be farther away from the substrate. Generally, the best distance is about 20~30cm. These are the basic principles that must be followed when spraying.
4. The moving speed of the spray gun. When spraying, the moving speed of the spray gun has a great influence on the painting effect. If the spray gun moves too fast, the surface will appear dry and thin, poor leveling, and rough; if the spray gun moves too slowly, the coating formed is too thick, which is very likely to cause sagging. The ideal moving speed of the spray gun should be such that once the spraying is over, the new sprayed layer looks so plump and wet, neither dry, thin, barren, nor too piled. In short, the moving speed of the spray gun should be determined according to the specific conditions of the construction site. Generally speaking, just for relative comparison, the moving speed of pressure-feed spray guns is faster than other types of spray guns.
5. Trigger control. The spray gun is controlled by the trigger. The deeper the trigger, the greater the liquid flow rate. In the process of traditional gun shooting, the trigger is always pulled dead, not half pulled. In order to avoid the accumulation of paint sprayed at the end of each shot, experienced painters should slightly relax the trigger to reduce the amount of paint supplied.