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Auto Body Notebook

This guide outlines proper techniques for spraying various automotive primers, emphasizing the importance of application styles, flash times, and surface preparation. It details steps for using etching primers for bare metal to enhance adhesion, epoxy primers for sealing and filling, polyurethane primers for minor imperfections on painted surfaces, and polyester primers for filling major bodywork flaws. The guide ensures optimal results and durability in your automotive painting project by highlighting necessary sanding and sealing before topcoat application.

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Auto Body Notebook

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  1. Auto Body Notebook Page 42-43

  2. Primers Spraying Primer Etching Primer Spray 1 Thin, Light Coat Only On Bare Metal Prime Or Seal After Flash Time Epoxy Primer Spray 2-3 Medium Wet Coats On Any Surface Allow For Flash Time Between coats Polyurethane Primer Spray 2-3 Medium Wet Coats On Filled Or Painted Surfaces Allow For Flash Time Between Coats Polyester Primer Spray 1 Medium Light Coat Followed By 3-6 Full Wet Coats On Filled Surfaces Allow for Flash Time Between Coats • Etching Primer • Provides Adhesion To Next Coating • Uses Acid To Etch (Eat Into) The Metal For Adhesion • Excellent Adhesion To Sanded Bare Metal • Bad For Sandblasted Bare Metal • Requires Sealer Before Painting • Epoxy Primer • Provides Adhesion And Sealing To Next Material • Excellent Adhesion To All Bare Metal • Gives A Good Base For Body Filler • Must Be Sanded • Can Be Painted Over • Polyurethane Primer • Fills Minor Imperfections In Paint Layers And Bodywork • Best Over Painted Surfaces • Thin And Flexible • Must Be Sanded • Can Be Painted Over • Polyester Primer • Fills Major Imperfections In Bodywork And Paint Layers • Best Over Bodywork • Must Be Sanded • Requires Sealer Before Painting 43 42

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