Spray Gun - Spray Gun Operation
1. Spray Gun Operation

Spray Angle:
Hold the spray gun so that the nozzle is perpendicular to the painting surface and move the gun in a parallel direction.
The spray gun is must be perfectly level with the surface being painted, so that the spray distances from the top and bottom of the nozzle tip are the same. If these distances are uneven, an uneven paint film thickness will result.
Correct Operation

Incorrect Operation




Operation Speed of Spray Gun

Move the spray gun at a constant speed to avoid paint film unevenness (thick and thin areas).
Trigger Operation

The travel distance of spray gun (stroke) should be approximately 5?10 cm (2?4 in) longer than the actual painting target. At the end of each pass, release the trigger for a moment and pull again before starting the reversed direction of travel.
Overlapping Passes

Spray patterns will have an effective coating area. Outside the effective coating area, less paint will be applied, causing a thinner paint film. Maintain an even paint thickness by overlapping the spray gun passes.
Single and Double Coating
1.
Hold the spray gun at the left side of the surface being painted. Set the starting point of your spray pass outside the surface by a distance of 1/3 to 1/2 of the pattern diameter. Then spray horizontally towards the right side of the surface all the way to the edge.
2.
After step 1, move the paint gun lower to the area where the effective area of the pattern will overlap (1/3 to 1/2 of the pattern diameter). Then spray horizontally from the right to the left. This painting method is known as single coating.
3.
In comparison, if the same area is overlapped with multiple paint coats, it is called double coating.
Gradation

To apply thinner paint coats towards the outside of the repair center by creating a radial motion with your wrist.





Patch Paint

When painting a large multi-panel surface, follow the gradation coating method to avoid making the overlapped area of paint too thick.