getting rid of bumps in paint. - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 8 (permalink) Old 04-30-2006, 01:43 PM Thread Starter
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getting rid of bumps in paint.

My IH was painted before I bought it by someone who looks like they had a dust control problem.

I want to put vinyl company lettering on the doors. It would come out a lot better if I could get the bumps out.

What's the best way? Or do the doors have to be repainted?
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post #2 of 8 (permalink) Old 04-30-2006, 01:46 PM
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I think you can wet sand it Duke, but better wait to see what the experts say
post #3 of 8 (permalink) Old 04-30-2006, 01:47 PM
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Wet sand it and give er a good buffin and it will be show ready.....:Thumbup:

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post #4 of 8 (permalink) Old 04-30-2006, 04:14 PM
 
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wet sand with 1500-2000 wrapped around a rag or sponge... use a bucked or water with a bit of car wash soap in it to dunk the rag and sand paper in to provide the water (don't get stingy)

then as suggested polish

if its base/clear make sure you don't sand through the clear.. it will have to be refinished then

if its single stage make sure you don't get it too thin or you will be able to see throught the paint to the primer

if you want to do the whole truck i would suggest a hutchins random orbit water bug.. they are spendy at $300 but worth every penny
http://www.hutchinsmfg.com/products/waterb.html
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post #5 of 8 (permalink) Old 04-30-2006, 10:52 PM
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2 words CLAY BAR!!!!!

drivers side of my truck felt like sandpaper becasue the previous owner let the brakes go to far so I clay bar the side of my truck and its a smooth as glass. I could never bring my self to use fine grit sand paper

you can buy a kit at the auto store for like 20 bucks I think


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post #6 of 8 (permalink) Old 05-30-2006, 11:40 PM
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But if it's something that's in the base or under the clear, I don't think the claybar is gonna do the trick. They're made for removing contaminants.

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post #7 of 8 (permalink) Old 05-31-2006, 06:50 PM
 
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Correct! You are going to have to wet sand it and then buff with a finishing compound.
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post #8 of 8 (permalink) Old 06-01-2006, 06:07 PM
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Duke,

Is it actually dust or did they "fog" the paint while painting an adjacent panel? Either way, I agree with the guys about wet sanding and polishing. If it was me, since the doors are so flat, I'd use a rubber sanding block with the aforementioned 1500-2000 (I use 2000). The rubber block works on the bumps without taking down the rest of the finish as much.

Sand in one direction and stick with it. (up and down or front and back not in circles) For water, I pre-soak the paper and block for about 30 min. to soften it and avoid gouging. I have a hose trickling water that I hold in my left hand and drizzle on the panel while I'm sanding with my right. this continuously washes away contaminants to avoid re-scratching.

I follow up with a rotary polisher with a wool pad and 3M micro finishing compound.

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