Deep scratch repair

A4 1.8tqm

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To start I must admit that throughout this process I have felt that my technique is "wrong" in several ways,... but boy is it workin'!

Materials: Factory touch-up paint and clear coat pens (felt tip type), 2000 wet sand paper, Menz Power Gloss, Flex 3401, LC orange pad and a playing card.

The process:
I started by applying the touch up paint in 1-2 inch increments and using the playing card to remove the excess immediately. This left paint in the scratch and a very fine layer surrounding. Once I got the area done I let it dry just until it was no longer tacky.

The scratch before any attempt to wet sand etc. (old pic)
IMG_1599.jpg


The paint is already dry, I couldn't take pics during.
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This is where my process may be considered "wrong". I used the felt tip of the paint pen with out releasing any paint, it was almost dry. I proceeded to go along the scratch in tiny circular motions, again, not applying any more paint. this process just softened the half dried paint and pushed it into the scratch. After repeating a few times the scratch was filled almost level.

Dried. This is how it looks in between each re-softening pass.
IMG_2249.jpg



This is a couple passes in after wet sanding and compounding. Then reapplying.
IMG_2258.jpg


This process totally rely's on not applying more paint and pushing re-softened paint into the scratch. I'm quite sure that this will have negative effects on bonding and I will catch some heat for this.

After a few layers I let it dry over night. Before wet sanding I re-re-softened the excess paint and wiped it off with a misc. use MF taking great care to not soften the paint in the scratch. This really reduced the amount of sanding necessary. Power Gloss takes care of 2000 wet sand marks with ease.

The spot where the scratch is almost gone was for sure the worst part in that area, the was knife apparently pivoted and removed a nice chunk.
IMG_2255.jpg



These pics are the absolute best I could do to show remainder of the scratch.
IMG_2259.jpg


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The darker parts in the middle of the scratch and to the right are where I sanded all the way through the Clear in previous attempts to reduce the visibility by wet sanding.:eek:
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With the scratch nearly level I tried to apply the clear coat with the same "almost dry applicator" method. Unfortunately the clear coat pens tip fully saturates with out even "pumping". I ended up removing the paint from the scratch in a small area and had to start over in that spot. So I redid that spot and then tried again but let the tip dry out a little. The clear is drying right now and i can't wait to see/post the final results.
 
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Unusual method but seems pretty effective in your case. I've never had really great success with chips and such so I'm always interested in seeing what's working with other people. Thanks for the write up.
 
Thanks for the idea and description. This bears looking into!
 
Thanks for the reply's guy's.

I haven't had much luck with the clear coat pen. Every time I've tried it messed up my results. :mad: I assume that I need to let the paint fully cure before applying the clear. It would be nice to get some feedback from a pro painter regarding this process. I think with some experimentation, a technique able to get near 100% correction can be achieved. Anyone have another method for repairing deep scratch's?

Suggest/criticize as necessary... Please.
Feed back please
 
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My question is, do you use the clear coat pen after everything is sanded and polished? Would you not have a ridge? Or do you polish the cc after it's dried? I've repaired a scratch before, but shot 3 coats of clear out of a rattle can and then wetsanded with 3000 and then polished it out.
 
I planned on dong the same with the CC as with the color, no ridge, but I've got the color in the scratch nearly level along the whole thing. So now if i put clear on with the pen, yes, there will be a ridge. You do a write up on that scratch repair? Rattle can sounds like the right idea, how to advice? Is there a specific CC brand/type you can recommend for me? I've got a great vehicle to practice on first :D.
:thankyousign:
 
I use Dupli-Color Clear. There are 2 types of clear, one for earlier models and one for later models. I don't remember the years. I applied 2 tack coats 10 mins. apart and one final med coat. Be sure to tape and cover the surrounding area. I only taped the immediate area and got overspray on my glass, pillars and rear quarter panel which I had to clay and re-seal.
 
I'll be sure to protect from over spray. How large an area around the scratch should be sprayed? Not the whole panel? If you only sprayed part of a panel did it come out looking even? I assumed I have to spray the whole thing. Sorry for all the Q's.

:thankyousign: again
 
Let's say the scratch is 3" long. I taped an inch longer on both sides and 1.5" above and 1.5' below scratch. This gave me some room to use a sanding block. Sprayed the area with cc, removed the tape, hit it with 2000 and then 3000 to blend in and polished out.
 
Alright! I'll post pics when I get her done... and worthy of some of my beloved Fuzion! (or Souveran)! :xyxthumbs:
 
I use Dupli-Color Clear. There are 2 types of clear, one for earlier models and one for later models. I don't remember the years. I applied 2 tack coats 10 mins. apart and one final med coat. Be sure to tape and cover the surrounding area. I only taped the immediate area and got overspray on my glass, pillars and rear quarter panel which I had to clay and re-seal.

I use the same clear...works very well. I've been using a hobby airbrush kit for touchups. The problem is getting a good color match.
 
Originally Posted by A4 1.8tqm
Materials: Factory touch-up paint and clear coat pens (felt tip type)

Where are you fellas getting the "paint pens" with the factory color in them? My dealer only carries the little nail polish bottles.
 
I'm finally getting around to shooting the clear (since my digital camera was stolen I went on a detailing projects hiatus for a couple weeks, finally back into it.... camera-less :mad:).

I'm using U-POL Clear #1 which was recommended by a Wesco employee. Practicing on the old truck I wet sanded a random ~4x6" area w/ 2000 and taped it off. Shot two thin coats 10 min apart then a third 15 min later. How long should I let it cure before I remove the tape and how long until I can sand? Any last minute advice/tips before I get to my car?

Where are you fellas getting the "paint pens" with the factory color in them? My dealer only carries the little nail polish bottles.

PM sent, Audi dealer has them. For others check out paintscratch.com

I've been using a hobby airbrush kit for touchups.

Seen these used in some recent searching. Advice on what kit?

Thank you for the help, everybody :xyxthumbs:
 
I'm finally getting around to shooting the clear (since my digital camera was stolen I went on a detailing projects hiatus for a couple weeks, finally back into it.... camera-less :mad:).

I'm using U-POL Clear #1 which was recommended by a Wesco employee. Practicing on the old truck I wet sanded a random ~4x6" area w/ 2000 and taped it off. Shot two thin coats 10 min apart then a third 15 min later. How long should I let it cure before I remove the tape and how long until I can sand? Any last minute advice/tips before I get to my car?



PM sent, Audi dealer has them. For others check out paintscratch.com



Seen these used in some recent searching. Advice on what kit?

Thank you for the help, everybody :xyxthumbs:
I removed the tape soon after spraying the final coat of clear. Took the car in the sun and let it sit there for an hour and then wet sanded and polished.
 
thanks for posting this. my aunt has a black car that has seen many handlebars from kids bikes. i have already tried buffing them out but they are still there. when i get the time i will be borrowing your process to make the scratches diappear. will post before and afters when i do this
 
Alright! I'll post pics when I get her done... and worthy of some of my beloved Fuzion! (or Souveran)! :xyxthumbs:
I will be waiting your post..very interesting and helpfull thread!!!:xyxthumbs:
 
Looks impressive, will be waiting to see the final result.
 
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