Thread: plastic prep

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plastic prep help!
Im determined to paint my 87 fiero gt! This has been a four year project that helps me keep my sanity while Im not floating around on a ship , considering that I'm 7 years into a 20 year Navy career. Ive already got over 12k, including a v8 installation, in this project. I know this is not alot of $ relatively speaking, but its alot for me, and painting my car is one of my most important goals. Quickly, the fiero is constructed of entirely plastic body panels. The paint on the car is original which is a plus, no 2nd and 3rd repaints to deal with, but, the clear coat is completely disentegrated. As I sand the clear coat, Ive noticed that even when I sand it completely smooth with fine sandpaper, it can still be scratched etched with a fingernail. My first thought is that since it can still be scratched with such ease, Im going to have to take it completely off? When doing so with a broad palm sander, eventually the sanding reveals some of the bare plastic material in places. I am hoping to use a kirker brand paint system Ultra Glo Acrylic Urethane which comes with a Perfect Prime 2K Urethane Primer. These are my questions.

1. Do I need to completly remove this apparently disentegrated clear coat
2. If I do so, and bare plastic is revealed, will the primer work directly or, do I
need to spray an adhesive promoter sealer, and what kind, type?
3. Once 1 and 2 are solved, and primer is applied should the primer be
sanded, or will I have similar results if the acrylic/clear is sprayed within
time frames alotted based on the primer specs.

Look, any help is greatly appreciated! If you have no experience with this brand, thats fine, lets assume this is a typical paint system. If you would like to recommend what you would do with the paint system you use, please do so, Im not firmly committed to any particular paint.

Any help is greatly appreciated
Thanks, Hank
Proud Citizen and Server of the Greatest Country on Earth