PPG Training

Custom Restoration Guide 2018

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68 SPRAY GUN TECHNIQUE SPRAY GUN ANGLE The recommended spray gun angle is 90° in relation to the surface being sprayed. At this angle, the product is transferred evenly to the surface. Maintaining a perfect 90° angle to all surfaces is impossible, using it as a guideline increases the chances of the paint being deposited evenly. This proper gun angle also reduces the possibility of striping or metallic mottling and better ensures proper film build and drying characteristics. SPRAY GUN SPEED, PATH AND OVERLAP Maintining an even spray gun travel speed helps ensure uniform film build. The best way to judge gun speed is to watch the way the paint is striking the panel. Ask yourself the following questions while spraying: • Is the paint laying down correctly? • Is it wet enough? • Is it even enough? The spray gun path or overlap should provide the proper "wetness" without creating excessive film build. Use a consistent overlap of 50-75% as recommended in the PDS to achieve even film build characteristics in solventborne products. When spraying tri-stage or candy paint, the overlap must be increased to 90% to achieve an even finish in the color.

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