Got some "new" door panels from the junkyard, but they are tan, and my interior is gray. So I got some Colorbond dark graphite paint to match them to my truck. Cleaned the hell out of them with soap and water, degreased them, then went over them with a tack cloth. Sprayed Duplicolor Adhesion Promotor, then the Colorbond.

I'm having a real issue getting the Colorbond to bond to the panels. On top of that, after a few coats, it leaves like a gray dust on the panels that I can wipe with my finger.

Do I need to scuff them up with sandpaper to help adhesion? On all the things I looked up on this subject, everyone just said to clean them well and use adhesion promotor. Never anything about sanding the plastic.

 

couldn't find or hold out for the right color? All the plastic pieces I've done so far only needed the promoter and Krylon Fusion. The "dust" should wipe away after the paint has cured.

 

I just put a 2001 expy console in my 2002 F150 and I use the same technique as you except that I used Duplicolor paint over the Duplicolor adhesive. May need to use the same brands of paint adhesive and paint. Good luck!

 

Maybe that's what it is, pdabbs. I've been looking for panels in halfway decent shape for months now. The tan ones are the first ones I've found that weren't cracked.

 

to do it right you need to sand them with an harsh grit like 80 or so then prime them once they are dry put on a guide coat go back sand them down with 180 then do another guide coat and step it up to like 400 or 800 wet then paint your color and wet sand again with a 800 or 1000 then clear and do 1500 to 2000 and buff to a wet shine lol I have been down this road and its alot of work but totaly worth the show quality you get out of it

 

Sounds like a lot of work Badazzhog. I think that if it has some rough edges or blemishes, then sanding may be needed. If you degrease it, then use paint adhesive then paint it should hold up fine. I believe a lot of these companies use different types of chemical bonds so that you use their products and not different brands between coats. Kinda think about it like hook and pile tape. The hook(spray adhesive) and the pile(paint color). Another brand may be just the opposite bond.
I just made sense to my brain(been a long day). Hope it helps.