Cleaning and prepping the interior of boxed body panels.

Rusty105

Promoted Users
Hello everyone,

While not strictly an Epoxy primer question, I am, sure someone has done this.

I have new inner rocker panels for my 65 Mustang, ones made for the convertible. Basically a box structure, roughly 5.5" tall 4" wide, or so, and about 7 feet long, or so. I can clean and prep the outside just fine, but how does everyone go about cleaning and prepping the inside for epoxy? I can wash the manufacturing oils out and use the two W&G removers to get the metal clean, but how to sand it to give it some bite? I can get my hands in about I think about 18" from each end, but that leaves the middle.

Ideas??

Thanks
 
lol.... Just watched that video.

How does this compare to Fluid Film?

Rusty

It's a debatable subject, however......

Fluid film has about 36 month protection and it's recommended to reapply annually.
Fluid film does get into the smallest areas due to being an oily substance. It does wash off with repeated applications of water.

Cavity wax can live the life of a car under respectable weather conditions. Cavity wax is a much thicker application.

For real world opinions for both those products, read off road 4x4 forums. Those boys like their water holes and mud bogs :)

I see more of them use Cavity wax over fluid film.
 
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Even still, I am not sure I want to leave this bare metal. I can see the fluid film or cavity wax after assembly... Maybe I will use a metal etch type primer that doesn't need to be sanded. Although I would love to use SPI
 
Even still, I am not sure I want to leave this bare metal. I can see the fluid film or cavity wax after assembly... Maybe I will use a metal etch type primer that doesn't need to be sanded. Although I would love to use SPI

If you can use a metal etch primer, you can use SPI epoxy. It doesn't have to be sprayed. Also SPI epoxy doesn't have to be sanded. I use these foam paint brushes that any hardware store carries, even Walmart has them. Many places on my car I can't spray, so I paint with a brush.

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If you can use a metal etch primer, you can use SPI epoxy. It doesn't have to be sprayed. Also SPI epoxy doesn't have to be sanded. I use these foam paint brushes that any hardware store carries, even Walmart has them. Many places on my car I can't spray, so I paint with a brush.

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the sanding is the only thing i can't do, I can wash and clean and degrease with no problem, just can't sand in there. (T-Rex arms)

I have used the foam brushes before, but they tend to get real floppy pretty quick.
 
the sanding is the only thing i can't do, I can wash and clean and degrease with no problem, just can't sand in there. (T-Rex arms)

I have used the foam brushes before, but they tend to get real floppy pretty quick.

Good lucky with your project. You're on the right path to success. Thinking outside of the box is sometimes required on these projects.
 
I’d rather have cavity wax over bare metal than etch primer. When that junk fails water will get behind it. Cavity wax won’t crack and it creeps into the pinch welds.

Mandatory backyard hack disclaimer inserted here… :D

Don
 
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