First of all I'd like to thank everyone here for the information that's been provided, I've learned a few things since first visiting this site a few days ago. I especially liked the article on rust removal. The question I have is what to do with internal rust that would be difficult to remove, examples would be behind bracing, between two layers of sheetmetal. POR? epoxy? cavity wax? I've used it all, I guess I just want a pro's opinion in hopes to learn something new. Any tricks for the interior surfaces that won't be totally cleaned and prepped for primer like the exterior? Bob

I like first using one of the penetrating phosphoric acid rust converters like Rust N-M-E. Then paint it with POR15 to seal any further damage.

Hi Bob,

In my opinion, there is only one way to get rid of rust in confined areas and that is to have the panel dipped. I prefer Redi-Strip, as they DO NOT use an acid based rust remover that will re-activate once moisture hits it. I also believe there is no better way to prevent further rust in these areas than by having the clean panels e-coated. This is the coating that is found on new sheetmetal parts, normally black.
This is the one approach I know of that actually works.

Randy Ferguson

Guys, Thanks for the response, I'm familiar with the dipping and ecoat and my current project was dipped in Milwaukee. Definately the way to go for removing most of the rust and paint. I have taken some of the seams apart on this car and have found rust still in some of the tightly crimped areas. I usually treat the panels with epoxy and a penetrating cavity wax in the pinch weld areas and have used POR15 on projects that weren't dipped but had surface rust on the interior, all methods have worked well with no problems but I was curious if there was a new proceedure being used that I wasn't aware of. Randy you do some awesome work! Do you happen to know another metal working guru by the name of Terry Hegman? He grew up down the road from me and I've seen his work in numerous magazine articles since he moved to California, just wondering if you knew him. Thanks, again.

Hi Bob,
Nope, I don't know him.

Randy