Prepping plastic for paint: question

[phenryiv1]

I am making the necessary mods to my 88 to use a 91+ grille and headlight doors (and yes, I am writing a how-to with lots of pictues). Before I install them permanently, I want to paint the parts, but they potentially have wax or grease on them.

 

What can I use to prep the plastic that will not harm the plastic but that will promote good adhesion and an even coverage coat?

[jbhill]

i always wash plastic stuff with dish soap and a grey scuff pad if I'm going to paint it. cleans and lightly sands it. b4 i spray on plastic adhesion promotor, i clean it with wax and grease remover.

[brdhntr]

:agree: i recommend dawn dish soap to remove wax and wax build up. use a scotch brite pad to scrub it. when done, wipe it with rubbing alcohol (cheap). make sure you apply a plastic adhesion promoter. then paint it.

 

with plastic, it's best to paint in lite coats. then apply the next coat when the previous is still a little tacky. when done, let it dry then sit in the sun for several days to bake it on. the paint will stick better and last longer. :thumbsup: