Ok painters... Prepping a damaged fender thats off the car...

480 Views 6 Replies 4 Participants Last post by Milkysunshine, Jul 4, 2003

vw mofo

Discussion Starter · Jul 3, 2003

I know theres a body work forum, but I figured with all the guys who have recently painted cars, this would be the best place to ask...
I finally got my passenger side SLC fender in the mail yesterday. Like the seller mentioned there is a bit of surface rust and a small area on the front edge of the fender flare where some body work had been done thats rusting. Whoever fixed it did a nice job fixing the dent, but didn't bother to treat the back side of the fender where they drilled through to pull the dent out.
So, my immediate plan is to strip the fender to bare metal on the outside and also on the back side where the repair was made. My question is what kind of product should I use on the back side to keep the rust from returning? On the outside I was just going to use a nice etching epoxy primer. Is it Ok to use the same on the back? I know that primer is somewhat pourous, so should I just go ahead and shoot a bit of paint over it or is there another type of product that would better suit a part that is not visible?
Thanks!

Modified by vw mofo at 9:48 AM 7-3-2003

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Milkysunshine

· #2 · Jul 3, 2003

Re: Ok painters... Prepping a damaged fender thats off the car... (vw mofo)

they have products that actually neutralize rust. I believe they are called rust converters. ...ask at your local paint shop. after using that I would just spray it with a rustoleum spray can to protect it on the inside

it's cheap, and you don't have to worry about spraying it with a gun.

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vw mofo

Discussion Starter · #3 · Jul 3, 2003

Re: Ok painters... Prepping a damaged fender thats off the car... (Milkysunshine)

Good idea! Completely forgot about the rattle can option.

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NVmyVW

· #4 · Jul 3, 2003

Re: Ok painters... Prepping a damaged fender thats off the car... (vw mofo)

yeah the rust netrelizer is almost a plasticy type stufff that lets you turn the rust into almost a primer. and rustoleum is great

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G60Driver

· #5 · Jul 3, 2003

Re: Ok painters... Prepping a damaged fender thats off the car... (NVmyVW)

Don't spray anything out of a can *IF * you plan to shoot with automotive paint later on. If you shoot "primer" then you'll need to shoot paint too. As you said, primer can be porous. If I were you, I'd sandblast the entire fender, do the bodywork over again and prime/paint. Then I'd spray rubberized undercoating on the inside of the fender on top of the paint.
I'm king of overkill sometimes though.

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vw mofo

Discussion Starter · #6 · Jul 3, 2003

Can you recommend a good product for undercoating? How about like a truck bed liner or something?

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Milkysunshine

· #7 · Jul 4, 2003

Re: (vw mofo)

I was thinking of undercoating... but then again I am the king of not adding weight where it is not needed (even if it is a couple ounces...) they sell spray cans of that stuff too.

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