PPG Training

Custom Restoration Guide 2017

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79 SPRAYABLE PRIMER SURFACER PROCESS PD-1520 Caution: Wear the proper safety protection when sanding, cleaning, mixing and spraying all materials included within this process. Primer Surfacer is considered the final prime. In the restoration process, this stage is designed to fill P220-240 grit sand scratches and provide a uniform foundation for paint. The filler and polyester primers are too porous for painting over directly. A urethane primer surfacer yields a better surface for paint without the need for a primer sealer. 1 Scuff sand all recessed areas and panel edges with red scuff pad for adhesion of primer surfacer. 2 Clean the area to be primed thoroughly with the appropriate PPG cleaner, using clean towels. Dry completely. 3 Mask as necessary to protect vehicle from overspray. 4 Apply 2-3 coats of Primer Surfacer. a. If not using primer sealer later, use the recommended shade of gray surfacer. b. Evenly apply medium wet coats. DO NOT DRY SPRAY. c. Allow each coat of primer surfacer to dry 10-15 minutes before applying the next coat. This prevents trapping solvents and shrinkage of the primer. 5 Clean spray gun immediately following the application of the final coat of primer. 6 Force dry the primer surfacer or allow to air dry according to the PDS recommendations. 7 Ready for Sanding Primer Surfacer PD-1590.

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