Need help painting plastic, stuff keeps getting orange peel!

Hey guys I am running into some trouble painting some plastic on a motorcycle. This is waht I did....
I sanded all of the chips down and then went over the whole thing with 400 grit. Then I cleaned it with dish soap rinsed and let it dry. Then I applied the first coat. The paint seems to have "orange peel" on the areas that I sanded the old paint down. It specifically orange peels where the old paint meets the plastic. (spots where I sanded). So I let it dry for a while then I got sanded it down, cleaned it with nail polish remover and let it dry again. Then I sprayed it again with Sealer primer. and it even made the sealer orange peel. Does anyone have any ideas? It doesn't do it everywhere that was sanded just a couple spots.

Are you wetsanding after painting? And what exactly are you using to paint it. Brands, ect.

I am just trying to spray paint it with a duplicolor spray can, I was not planning on sanding it after but I have been becuase of the orange peel. The primer/sealer is napa brand.

pics??

^^its gonna be kinda hard to show orange peel in a picture

try etching primer i think is how you spell it...

here i know exactly what the deal is... your problem is you're painting one type of paint onto another, and with that a lot of times you'll have a chemical reaction which will make the paint youre applying lift... the best thing to do is sand whatever you're painting down to the plastic to get all the old paint off, put a spray can primer on, then spray can paint.  When i fixed my bumper on my old rs before i sold it i used a spray can primer and real paint, this caused that reaction and made the paint lift and "orange peel" i'm assuming you're orange peel is fairly extreme? lol that'll do it. kind of a pita but it's gonna be done :-\

orange peel course of action=wetsand with 1500-2000 grit then buff/polish with ultra cutting cream

yea but orangepeel woulda happened all over the part if it was really orange peel... but the way he described it it sounds like the paint just lifted in certain spots, which is what i was talkin bout

also if youre touching it with greasy fingers or something like that would cause the orange peel... but im sure youre looking after that huh?

quote:

ORIGINAL: Kaede.Noir

also if youre touching it with greasy fingers or something like that would cause the orange peel... but im sure youre looking after that huh?

this could also happen if you didnt rince all the soap off. something to do is get a chemical called hi-solve and clean everything off with it thats gonna get painted. it will get rid of all the grease on the surface and will probably fix your problem

dude this is wut you do, sanding with 400 is good, but keep going all the way up to 1000 at least if not 2000. then you go over it with a tack cloth, it's a special cloth used in autobody right before you paint it(after you cleaned it) to get all the small particles off of it, then you apply self etching primer that'll adhere better to anything. then you wetsand it with 800 grit and then wetsand with 1000, because orange peel starts in the primer, not the actual paint and works its way up.

quote:

ORIGINAL: Kaede.Noir

also if youre touching it with greasy fingers or something like that would cause the orange peel... but im sure youre looking after that huh?

 
 
that would cause fish eyes, wax and grease remover works well to prevent that