In this post we will talk about Spraying Automotive Clear Coat Over Old Paint.
Many auto enthusiasts who want to learn about auto body repair seem to think that ...just because the clear coat on their paint job is peeling or faded, they could just sand the old clear off and re-clear the panel with new clear.
Let's get into the MEAT of prepping this thing... Here's what it looks like.
First, you need to sand the faded, chipping clear coat and feather it into the panel. This means you need to use an orbital sander. Another word for that is a "DA" a Dual Action sander. Usually pretty affordable and a must have in a auto body mans garage.
Then you need to use a pretty fine paper like a 320-360 grit or so and sand it all down. Next I would wet sand it even smoother with 400-600 grit paper.
By the time you finish the prepping process, you'll have gone through the paint in some areas GUARANTEED! or even into the metal. There is NO way you can successfully take (just the clear off evenly) to spray clear on it. You'll have gone into the base coat and ate away through layers of paint.