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DIY Paint Scratch Repair Alternative

Old 11-Mar-2008, 10:54 AM
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DIY Paint Scratch Repair Alternative

DIY Paint Scratch Repair Alternative (I Call it Spot painting)

This is my writeup on ALTERNATIVE scratch repair which refer to as spot painting. this is not for everyone and it is not a perfect paint job repair like a repaint of a whole door. it is meant to be SIMPLE, CHEAP solution for big scratches. Do not bother doing this on small swirl mark scratches as it does not make sense to do so, only for big scratches such as a serious car keying type of scratch. I have used this on my bumper, front lip side skirt touchups and side view mirror.

I had the photos sitting around on my photobucket and decided to share them for those out there who may not hvae the money for full paint jobs and repaints of car parts like doors etc...

Supplies

-300, 500, 2000 grit sandpaper.
-Paint Can of your base coat with clear mixed in
-Etch Primer or Primer
-Sponge or Foam Pad like Soft Styrofoam
-Heat Gun

Supply photos of some things i use






Like most paint work, you should start with wetsanding the area around the scratch, i have no before photo but it was a deep semi metal dented scratch to the metal, I sanded down to primer where i could get the paint even enough to not feel. Although there is a dent which is visiible i did not bother filling it, but you can if you would like, i repaired this car for a friend who asked me to do so and did not care much of the outcome as long as it was not the deep metal scratch he had on it before.


Here is a seperate scratched and scraped off area which i sanded as well in the middle of the door, i ended up lighlty sanding the side trim as it had visible scrapes but i did not take a photo of it



1) Basically use a wetsand sandpaper with a foam pad or even a med stiff sponge, wrap the sandpaper around it and dunk it in water and sand for a bit and redunk the sponge every little while just keep the water dripping so it washes away the sanded particles. I would use about a 300grit or higher for the sanding at this stage maybe higher but no lower at this point unless you have geaping scratches that need to be worked out. after you use the 300 you can move higher to a softer grit of about 450 or so, to help smooth it even more.

At this point you should have something like in the photos depending on how deep your scratches. keep feeling the surface to try to get it as smooth as possible, do not exceed more then 4 or so inches around the scratch as it will be way to big around the scratch, if you do dont worry. there will be minor scratches from the surrounding areas from sanding, do not worry you can lightly paint over these areas later.


2) after cleaning and completely drying the area with a heat gun, you can use etch primer around the exposed metal area and over the scratched up sanded area, do not go past the heavily sanded area with your primer.

3) let the primer dry a little and then proceed with your base coat in this case an maroon red. spray from 1 side to the other gently on the trigger from about 20cm away as not to overspray onto windows etc, i would recomment masking other parts of the car as well. do it lightly a little before the sanded area to completely cover the are, try not to paint on the smooth surface of the panel where there are no sanded marks as the paint will not grab on as well and may eventually flake off. do 1 or 2 pass coats and let dry each time, this will help ensure a nicer finish, if you are better at painting you may do 3 or 4 coat passes each being light enough to not drip. if you mess up your paint let wet paint even you will have a tar-type paint disaster.

4)let dry for 1 hour with heat gun blowing on it, not too close, or wait for 1 month if you want, but if you dont care much and want to get it over, after its dry with a heat gun for about 1 hour or so u can use some rubbing compound or 2000grit wetsanding over the area. very very lightly as not to scrape off the paint you jus did but to help make it a lil shinier. then you can wash it with water and leave it for about a month and then polish it. Although it is recommended not to wax or polish it it think for like 3 months or something, i have done it without much problems.

As you can see the area is somewhat visible a little clouded after wetsanding it with the 200grit so you may not even want to wetsand it after and just leave it, if its good enough to your liking. after time this usually fades away and blends better with the panel but atleast you dont hvae a gaping scratch there.I HIGHLY recommend getting a paint with the clear mixed in that way yoyu dont have to use a seperate clearcoat which in this case my friend got jus the base coat mixture and no clear so i had to use some seperate primer which i had lying around but hate using since its hard to spray and comes out looking a littly off so i had to wetsand it after. If you get the mixed clear in the paint you will ahve superior results like in some of my other diy threads.



heres after photos i didnt take any before photos as i was not planning on doing a diy or anything with them at the time. the rear bumper had some sccratch marks from bumper scrapes and hits so it was lighlty sanded and painted, but most of the work was put into the door. ITS NOT PERFECT BUT IT WAS GOOD ENOUGH FOR LIKE $30 WORTH OF SUPPLIES and 1 hour of time.










you can use this technique on many other things such as a craked lip.



or full accessory painting








Last edited by Crazydragonclk; 11-Mar-2008 at 11:40 AM.
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Old 20-Mar-2008, 07:48 PM
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can you do this for spot painitng bumpers?
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Old 18-Apr-2008, 10:34 AM
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Originally Posted by Joker View Post
can you do this for spot painitng bumpers?
I have and you can as well, but i would prefer to paint the bumper either as a whole section together but if your bumper is in rough shape you can do only the areas you want to. and then fade out spray like on the door,
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Old 18-Apr-2008, 10:54 AM
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great DIY
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Old 19-Apr-2008, 06:56 PM
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i gotta do this this summer for my front and rear bumper...worth the time u think?
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Old 21-Apr-2008, 06:27 AM
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Originally Posted by Joker View Post
i gotta do this this summer for my front and rear bumper...worth the time u think?
depending on the condition of your bumper. you may want to consider talkign to a bodyshop guy and asking them to get a new bumper which generally is quite cheap i think ranging from $50-100 if your lucky. and then jus paint over the pre primed bumper.

now if your numper jus needs a touch up here n there jus repaint it, its worth it for 25$ and isnt hard at all, jus mask ur grills and black components of the bumper.
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Old 19-May-2008, 04:02 PM
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thats the scratch/scrape
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Old 23-May-2008, 03:53 PM
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for that scratch i would wetsand the area to the corner of the bumper, and jus spray it off with a spot painting pass, it will be a similar finish as the above photos jus sand it smooth enough so u can barely feel the scratches.
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Old 17-Sep-2008, 08:02 AM
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great thead....
My civics side door is a little dented and scratched ....can anyone tell me how to repair that...ill be posting a pic soon....or if anyone can do it for me for a little $$$
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Old 18-Sep-2008, 07:42 AM
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whats a Etch Primer or Primer
and what does it too....i will need ur help boss in some time....fixing my scratches
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Old 18-Sep-2008, 11:42 AM
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I would like to know where you picke up rubbing compound. Gonna be doing some paint repair soon.
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Old 18-Sep-2008, 12:14 PM
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Originally Posted by toofast View Post
whats a Etch Primer or Primer
and what does it too....i will need ur help boss in some time....fixing my scratches
etch primer is a primer which is used on metal or filler and i think it is basically an aid in helping model and levelling the surface to the right shape as in my steps i use it as a coat to also help me determine if the surface is smooth and transitional. and it helps the paint to bond better as well
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Old 18-Sep-2008, 12:14 PM
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Originally Posted by buddhafest View Post
I would like to know where you picke up rubbing compound. Gonna be doing some paint repair soon.
you can get the 3m rubing compound which is excellent from walmart in the auto section but look around the sandpaper n bodywork supplies not in the detailing section.
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Old 18-Sep-2008, 12:15 PM
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you rock man.....great writeup
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Old 18-Sep-2008, 01:24 PM
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Originally Posted by Crazydragonclk View Post
you can get the 3m rubing compound which is excellent from walmart in the auto section but look around the sandpaper n bodywork supplies not in the detailing section.
Cool, I'm gonna do that tonight. Unfortuantely I did not purchase paint with the clearcoat mixed in. I got it seperately.

Shouldn't make that much of a difference right?
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Old 18-Sep-2008, 01:52 PM
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i have a dark green civic....now when i paint the scrathes and let say trim...wouldnt their be a color match problem...new paint shiny and old paint dull...and what will the estimate be for 2 door painted...any idea...
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Old 18-Sep-2008, 04:40 PM
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Originally Posted by buddhafest View Post
Cool, I'm gonna do that tonight. Unfortuantely I did not purchase paint with the clearcoat mixed in. I got it seperately.

Shouldn't make that much of a difference right?
it will look less shiny but just spray your seperate clearcoat over it and it will look fine.
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Old 18-Sep-2008, 04:45 PM
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Originally Posted by toofast View Post
i have a dark green civic....now when i paint the scrathes and let say trim...wouldnt their be a color match problem...new paint shiny and old paint dull...and what will the estimate be for 2 door painted...any idea...
yes you will have it look more shiny generally, the trim will look shiny as well.

if your painting both doors. ull need about 1 full can each since you may not be as well of a painter. if u want get 3, but 2 should be enough, my advice is if your doing the full door is to sand it so that you get the clear off and are able to bond to the existing paint surface, and follow all other instructions, although i would not use primer in this case, which is what i did a few years ago with one of my doors.
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Old 19-Sep-2008, 08:10 AM
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can u or anyone do it for me... will provide all the needed stuff...for a little extra cash..maybe later...i dont wanna ruin my car by painting myself...

ill post pics of my car damage...and let see what u say
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Old 19-Sep-2008, 08:31 AM
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Originally Posted by toofast View Post
can u or anyone do it for me... will provide all the needed stuff...for a little extra cash..maybe later...i dont wanna ruin my car by painting myself...

ill post pics of my car damage...and let see what u say
i honestly dont have anytime to work on any car let alone my own, what i would advise you to do is to practice on the smaller touchup damage and any trim pieces until your ready to work on a full panel or something like that, which is exactly how i learned, and it really is about just doing it with the given tips and tricks that are given to you.
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