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 Post subject: painting plastic
PostPosted: Sun Aug 10, 2008 2:39 pm 
Klamath
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Joined: Sun Apr 13, 2008 7:51 am
Posts: 212
I have an apple pro keyboard that I want to spray paint. Its clear plastic so what do I have to do to prep the surface and should i get a plastic primer or get plastic paint.


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 Post subject: re: plastic paint.
PostPosted: Sun Aug 10, 2008 4:59 pm 
Team Member Top 500
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Location: FL
hey Pellier,

There sure are plastic paints/primers. It helps if you know what type of plastic it really is(pc(polycarb), pp(polypro), pe. Your keyboard product info may state what it's constructed from? If you can find a paint to the correct plastic you'll be golden.

Priming plastic will help avoid peeling and may eliminate sanding. Carefull about preping, acrylics and polycarb, they are sensitive to soaps and may cause severe cracking.

Watch out for overspray and try to keep the spray area very clean(i.e. no free dust). Good luck, :).


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 Post subject:
PostPosted: Sun Aug 10, 2008 6:15 pm 
Klamath
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Joined: Sun Apr 13, 2008 7:51 am
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i cant find what kind of plastic. It's the glasslike kind that splinters when it is snapped in half


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 Post subject: re: plastics
PostPosted: Sun Aug 10, 2008 7:11 pm 
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Yea it's always a tough call to ID a plastic.

Could be SAN, or PC(polycarbonate). Lexan and Acrylic are too expensive I think. It might even be clear PVC, but that's not cheap either.

I would think most plastic paints will be ok, you could try painting a small inside corner to test and make sure it cures and doesn't attack the plastic.

There's a 1k's types of plastics and mill's of additives to give them differant properties, no way of really telling unless the manufacture notes it and then it'll still be just a general spec..

See what you can find at the store and do a test spot, best I can recommend.


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 Post subject:
PostPosted: Sun Aug 10, 2008 7:35 pm 
Klamath
Klamath

Joined: Sun Apr 13, 2008 7:51 am
Posts: 212
yeah im pretty sure its pc


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 Post subject:
PostPosted: Sun Aug 10, 2008 9:55 pm 
Million Club - 5 Plus
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pellier wrote:
It's the glasslike kind that splinters when it is snapped in half

Polystyrene is also a possibility in this case. That's the same brittle stuff that 1/24 model cars are made from.
http://en.wikipedia.org/wiki/Polystyrene

Is there one of those three-sided recycling logos with a number in it anywhere?
http://www.earthodyssey.com/symbols.html


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 Post subject:
PostPosted: Mon Aug 11, 2008 5:16 pm 
Klamath
Klamath

Joined: Sun Apr 13, 2008 7:51 am
Posts: 212
its actully kind of flexible
like a cd so its probaly pc


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 Post subject: Re: painting plastic
PostPosted: Mon Aug 11, 2008 8:02 pm 
Bitchin' Fast 3D Z8000
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pellier wrote:
I have an apple pro keyboard that I want to spray paint. Its clear plastic so what do I have to do to prep the surface and should i get a plastic primer or get plastic paint.


Krylon's Fusion line of spray paints is made for plastics.

http://www.krylon.com/products/fusion_for_plastic/

http://www.krylon.com/safety/surface-preparation/

Another option could be the paints used on plastic models. You can find those at any hobby store.

The keyboard is probably Acrylic like basketball backboards and PlexiGlass sheeting and standard plastic eyeglass lenses (the ones covered under the company's optical plan, not the higher priced ones).

You might want to paint the inside. That way, the paint is protected and you still get the color. You'll still see any seams and mold marks, if there are any, since the paint will be under them. If you don't like the look, you can paint the outside.


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 Post subject:
PostPosted: Tue Aug 12, 2008 7:12 am 
Klamath
Klamath

Joined: Sun Apr 13, 2008 7:51 am
Posts: 212
I was gonna get the fusion paint thanks for the prep link though


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