Cert III Refinishing Practice Questions - Certificate III In Automotive Refinishing Technology (AUR32420) Exam

What prep step is required on raw polypropylene (PP) plastic bumpers to ensure subsequent coatings adhere?

Etch the plastic with phosphoric acid solution Sand the surface using coarse 80-grit sandpaper to create a rough profile Apply a heavy coat of standard metal epoxy primer Apply a dedicated plastic adhesion promoter after thorough cleaning and scuffing

Correct Answer:

Apply a dedicated plastic adhesion promoter after thorough cleaning and scuffing

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