PPG Training

Custom Restoration Guide 2018

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32 MECHANICAL STRIP PD-1153 Caution: Wear the proper safety protection when sanding, cleaning, mixing and spraying all materials included within this process. HAND OR SANDER There is sanding AND metal treatment in this process. 1 Sand the entire part using a DA sander with P80-P180 grit. Clean with approved the appropriate PPG cleaner. Tack off surface. 2 Apply two coats epoxy primer within 30 minutes of sanding. REMINDER: When left unprotected, bare steel begins to oxidize (flash rust) after 30 minutes at 50% relative humidity. Sanded aluminum begins to oxidize almost immediately. Protect with epoxy primer. 3 Complete welding, rust repairs, sheet metal patching, fiberglass or gelcoat repairs. 4 Clean with the appropriate PPG cleaner. 5 Reapply epoxy primer for corrosion protection. 6 Proceed to body work. Refer to the Body Filler Process, PD-1180.

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