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Re-Painting a Radiator - Page 2

post #11 of 21
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Quote:
Originally Posted by Kal777 View Post

id still sand it, the idea of sanding a surface before painting it is to help the paint stick more readily. also before you start painting, sit your spray can in a bucket of warm water, around 25*C for 1-2 minutes. helps stop the paint from looking blotchy and gives it a coat almost as good as if you had a spray gun.

Very good advice! Yeah, I will def be sanding, I want this thing to look nice and not chip apart. Want it to bond to the metal so it conducts heat, not adding a layer of insulation.
I'll do the warm water trick! Never tried that! smile.gif
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post #12 of 21
Quote:
Originally Posted by Kal777 View Post

id still sand it, the idea of sanding a surface before painting it is to help the paint stick more readily. also before you start painting, sit your spray can in a bucket of warm water, around 25*C for 1-2 minutes. helps stop the paint from looking blotchy and gives it a coat almost as good as if you had a spray gun.

What grit sand paper do you recommend?

Thx
post #13 of 21
800+
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post #14 of 21
First start off by sanding out all the scratches w/ around 600 grit. Wet sand if possible. Then apply many think even coats of paint. Doing 10 coats isn't too many. Always clean off the painted surface w/ tack cloth before every new coat. Give the paint some time to cure. You can cure in the oven to reduce time. Do this at the end, not between each coat. After you get a nice thick coating of paint then it is time to wet sand. Start w/ 1000. Then 1500. Then 2000. Then bring out some polishing compound. You'll be able to get a mirror finish out of your paint if you do all this well enough. But it does take a whole lot of time.
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post #15 of 21
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I will be going by lowfat's suggestion and posting up the results. I will probably start my initial sanding with 240->400->600 grit. Starting with 600 is just too fine for this thick enamel and I will waste much paper (and time). Other than that, solid advice! Thank you and rep +

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post #16 of 21
See how much it cost at local body shop to sand blast the radiator, if you lived near me i would do it for free biggrin.gif Then prime + 6 light coats or until desired look is accomplished.
post #17 of 21
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Quote:
Originally Posted by The_chemist21 View Post

See how much it cost at local body shop to sand blast the radiator, if you lived near me i would do it for free biggrin.gif Then prime + 6 light coats or until desired look is accomplished.
Awww you're so nice. Live in California? tongue.gif Don't u think sand blasting would damage the fins though? I guess you could tape them up for protection, but I'm really don't think itd help that much heh.
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post #18 of 21
No damage at all they would just use the softer material for the job and it should be around $20 and take about 20 minutes max unless its a 120.9 or something alike.

Edit: Here is a member getting his done http://www.overclock.net/t/1266202/build-log-the-big-budget-boomer-box-aka-the-bbbb/80#post_17521695
Edited by The_chemist21 - 7/24/12 at 11:16pm
post #19 of 21
Have you heard of plastiKote ? Its pretty cool, use it on my winter rims for snow tires.
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post #20 of 21
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Quote:
Originally Posted by The_chemist21 View Post

No damage at all they would just use the softer material for the job and it should be around $20 and take about 20 minutes max unless its a 120.9 or something alike.
Edit: Here is a member getting his done http://www.overclock.net/t/1266202/build-log-the-big-budget-boomer-box-aka-the-bbbb/80#post_17521695
Dang, wish I had access to that machinery!!
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