Got the passenger door off to rough it up and primer and found that the inside of the door skin is pretty heavy in surface rust. I'd say it hasn't rotted, but it's getting there. I'm guessing it's probably got some embedded rust in the metal and is pitted, but nothing shows on the outside of the panel - I stripped it to bare metal and it's clean and quite solid.

Problem here, is that with little access to the back of the door skin and no welding ability, how does one take care of this sort of thing without replacing the door skin? Could I slosh some muriatic acid (okay, maybe not SLOSH acid but you get the point!) around on it to kill the rust and then POR it perhaps?

If I ignore the problem, it's bound to continue and eventually compromise the entire panel. Just can't effectively get to the dang'd thing!

helloooooooo I say!?

Hellooooooooooooooooooooooooooooooooooooo!

I'd just use por15, there is no good way to clean the backside of that skin besides a chemical dip. These are the areas where por15 is the best choice (IMO).

I'd use POR 15 also. It will bite into that rust and you can paint everywhere you can get your long thin brush. I've had good luck with POR on that kind of rust.

or Eastwood's Rust Inhibitor. I think it's better for that application.

www.eastwoodco.com (http://www.eastwoodco.com)

I've used the Eastwoods Rust Encap. stuff in my doors alot... I put it in a cheap squirt bottle and shoot it back into the corners and then down along the bottom of the door. I clean it out B4 of course. I use an old serrated steak knife to get down into the pinch weld areas as much as I can then wash out with some wax/grease cleaner then treat with the Encapsulator stuff....Later,I'll go and shoot some of the 3m Rust Fighter (waxy stuff) on top of it... It's gotta be better than the way they came from the factory.....

Rick graemlins/waving.gif