Apply and Sand Glazing Putty (Optional)

What happens here

If the previously sanded surface still shows subtle ridge lines or minor imperfections after the first coat of paint (as seen in the video), apply a thin, even coat of Bondo Glazing and Spot Putty using a spackle knife. This putty is used to fill very small imperfections. Allow the putty to dry for about an hour. Once dry, sand the Bondo smooth using a fine sanding sponge until it blends seamlessly with the surrounding surface. The video implies that some top coats may require a primer over the glazing putty to prevent bubbling or pinholes from a chemical reaction; therefore, a primer coat should be considered optional depending on your paint system.

Goal: Fill any remaining minor imperfections for a perfectly smooth surface