Touch up paint over rusted rock chips

[LucaSumberac]

Hi All,

Last year I purchased a Subaru WRX. I've accumulated some paint chips that I want to repair, mainly to protect from corrosion. I purchased a dr. colorchip repair kit and I also purchased a fiberglass prep pen.

I attached a photo of one of the worst chips (right on the hood). After washing the car yesterday I tried to hit the rusted surface with the fiber glass pen, but it didn't do much. I decided I'd try doing the touch up over the remaining rust, it looks good, but I'm already regretting it since I didn't properly remove the rust.

Now that I'm in this position I'm wondering what some of you might do?

I'm contemplating using the fiber glass pen, or some 2000 grit over a pencil eraser to sand it back down and to sand off the rust that I could not get off on my first attempt.

Im also wondering if the blending solution that comes with the dr. color chip would remove the paint from inside the chip.

My second option is to just leave it alone, the repair looks fine now, but I'm worried about the rust underneath.

Thanks for your help Suggestion. I have plenty of more chips and I'm determined to remove the rust first, I may also try Iron X if I can't remove it via sanding.

https://www.flickr.com/photos/93372663@N05/15391960432/player/http://www.autogeekonline.net/gallery/data/504/PaintChip.jpg (http://www.autogeekonline.net/gallery/showphoto.php/photo/82008)
https://flic.kr/p/ps8PA9

[CopperMtnGuy]

I just use the edge of a folded piece of like 120 grit.

[Setec Astronomy]

I just use the edge of a folded piece of like 120 grit.

120 grit?!?!?!

Usually the fiberglass pen works pretty well, the problem is on very small chips you wind up enlarging the damage to remove the rust. You can also use the corner of a razor blade if you have steady hands. The Iron-X is an intriguing solution to this problem, I wonder if that would work. There are also the rust converters that you could try, the best seem to be from Eastwood.

[LucaSumberac]

Quick Update: I got home and I used the blending solution that came with the Dr. ColorChip kit on the chips I covered. It took the touch up paint right off. So I can start fresh. I'm going to try folding some 1000 grit, and work my way down. If I don't feel confident I can do this without spreading damage to more of the paint I'll try a rust converter.

Thanks for the suggestions guys!

[Setec Astronomy]

Yeah, sorry, of course those leveling fluids (Langka, Dr. Colorchip, or laquer thinner) work to remove the touchup paint. That's the great thing about touchup, it's laquer and if you mess it up you can wipe it right off/out!

Let us know how you do with the repair.

[oldmodman]

I use a carbide dental scraping tool.

It will get into very tiny areas and it leaves fresh, shiny steel behind. Perfect for painting.

You can also use a rust conversion chemical on it too. it leaves a black oxide surface behind ready to paint.

Duplicolor Rust Fix, Rust Converter, Black, 10.25 oz. Aerosol RF129: Buy the right Thinners & Cleaners at Advance Auto Parts (http://shop.advanceautoparts.com/p/duplicolor-rust-fix-rust-converter-black-10.25-oz.-aerosol-rf129/7140921-P)

and

Eastwood Rust Converter | Rust Converters | Auto Rust Converter (http://www.eastwood.com/eastwood-rust-converter.html)

[Dannyk]

Does Dremel have some attachment in their arsenal,just throwing that out if they do?

[LucaSumberac]

I use a carbide dental scraping tool.

It will get into very tiny areas and it leaves fresh, shiny steel behind. Perfect for painting.

You can also use a rust conversion chemical on it too. it leaves a black oxide surface behind ready to paint.

Duplicolor Rust Fix, Rust Converter, Black, 10.25 oz. Aerosol RF129: Buy the right Thinners & Cleaners at Advance Auto Parts (http://shop.advanceautoparts.com/p/duplicolor-rust-fix-rust-converter-black-10.25-oz.-aerosol-rf129/7140921-P)

and

Eastwood Rust Converter | Rust Converters | Auto Rust Converter (http://www.eastwood.com/eastwood-rust-converter.html)


Thanks for the info. I'll try these out. I'll be sure to update with before and afters when I'm finished.

[Vegas Transplant]

http://www.autogeekonline.net/forum/tricks-tips-techniques/69970-pencil-trick.html