interior paint painting plastic, trim

Caution - Rules filler/primer is needed if you want smooth clear coat is needed for a glossy look prep plastic with degreaser. Add until water is suddsy. Palmolive or dish soap works well add adhesive promotor before any layers use flex agent in all layer (primer, paint, clear coat) to help avoid cracking Never use armor all or any oil on your interior unless it is stock. You can use meguiars quik wax High build primer will help get rid of grain if you did not sand much Be careful with polyester/urethane primers... they need MEKP hardening agents to cure To clean your gun... loosen aircap so that it just stays on. Put the compressor to 15Psi, Add a little laquer to the cup. Spray the gun (perculate) To take apart the gun, take off the adjuster on the back, take off the spring, and pull needle out with fingers. PULL HARD Spraying Primer requires much wider tips. 1.8 or larger Some Good to Decent Products SEM Filler Primer in can SEM Adhesive Promoter OEM Flex Rose Primer (already has flex agents) Bulldog Adhesive Promotor Evercoat Slick Sand Filler Primer Evercoat Feather fill Rage products Dupont Primer Duplicolor Filler Primer Krylon Fusion paint for plastics 1. Sand out most grain, or rough the pieces a little bit if they are smooth ... 250 grit is good      clean before sanding and after sanding with a grease remover.... Or use soapy water and wetsand      If you want very smooth look, start sand with 80 grit until most grain is gone, then move to 150 grit, then to 220 grit, then 400grit           2. Spray the panel with 2 coats adhesive promotor 3. Spray panel with Filler primer until grain is gone, sand the primer in between each layer 4. Spray the paint in light coats to help flexibility, at least 3 is usually enough. Leaving about 20-30 minutes between coats, or following directions from the can 5. Let panels dry in the sun as long as possible. One night is good 6. With any imperfections still showing, wetsand them with 600 grit paper 7. When done painting and curing.... spray with clear coats, multiple layers. 5 minutes between coats at least. They cure better together if still painted when not completely dry 8. Let clear coat dry/cure for a couple days. It is quite tacky until hard

Yah, I do agree somewhat. But again all plastics are different, all regions are different, and all people treat their vehicle differently. All that stuff that I listed was just precautionary if you want to really go all out. But yes when I did small pieces like the trimming around handles, and the vents, etc... All I did was clean, sand, clean then 3 coats paint, 3 coats clear coat.

I think it all depends on your interior and if you want to be painting it again soon, but me personally I would follow these steps before I just go painting my interior of my car, better to do it right the first time than to do it like 3 times crappy and still have to do it right in the end...  Good write up, only thing I would change is i'm not too fond of leaving my stuff in direct sunlight it will dry over night in the shade too.