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Holding the Gun. Hold the spray gun firmly but comfortably in the hand. With a two-finger model, use the index and middle fingers to trigger the gun; with a four-finger model, use all fingers to trigger the gun. The gun should become a natural extension of the operator's arm.Gun Position. The key to a good paint job is an even coating over the entire surface. This is done by using even strokes. Keep your arm moving at a constant speed and keep the spray gun at a constant distance from the surface. The best spraying distance is 10 to 12 inches between the spray tip and the surface.
Keep the spray gun at right angles to the surface. This means moving your entire arm back and forth rather than just flexing your wrist. How to Make a Correct Pass. When spraying, start the pass, then trigger the spray gun; release the trigger before stopping the pass. Best results will occur when making passes about 20 inches wide. Keep the gun perpendicular to the surface and overlap passes approximately 50% to obtain the most consistent, professional finish.
With practice, trigger pull and spraying distance can also be used to change the pattern size. The ideal distance for airless spraying is 12 inches from the surface. Remember, the closer you stay, the more control you have. Spraying Large Areas. Spray a long panel or wall in sections, using horizontal or vertical strokes. Keep stroke length to 3 feet. Spraying a longer pattern may cause uneven coverage and excessive overspray. Overlap each section by 4 inches. Narrow panels are best sprayed using vertical strokes to prevent too much overlapping. |
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