Door handles aren't too bad, but smaller is not always easier. You have to make sure you get the texture down to a point where the primer can fill the pits.
1) Sand - 180, 220, then 400 grit and water seems to work fine for me
2) Dishwasher is a great idea
3) Grease/Wax remover, wipe with acetone
4) Shoot primer (high build works best with textured plastics) - find at Napa
5) Sand with 400 and water, make smooth
6) Shoot paint - first coat light, let it tack up, then shoot on evenly and heavier coat.
7) Re-apply paint, I usually use 3 base coats, makes sure EVERYTHING is covered (nobody likes a bare spot with clear over it!)
8) Clear, light first coat, medium second coat, medium final coat (wait to dry)
9) Sand with 1000, 1600 (with water)
10) Rubbing compound
11) Drink 4 beers
12) Apply to truck.
13) Drink 2 more beers
14) Enjoy!
Someone else probably does it differently, but I've painted a few plastic things, steel, and whole cars this way and they've all turned out very well. Hope this helps.
Tom.
BTW - adjust beer numbers accordingly.
