"Dave Plowman (News)" wrote in
:


A decent acid etch primer. I like Upol.

I know there are various Jenolite-type products, and someone suggested a
zinc-based primer. What are your views? My primary concern is to
inhibit rust, of course.

I once read the results of an experiment which seemd to conclude that
Hemmerite was one of the best rust inhibitors of all, but I don't know
how suitable Hammerite would be in this type of application...

Hammerite is a con...

Thanks for the responses. It's funny, but I've always thought etching
primer to be a con. I used to use it when I was doing a lot of refinishing
work in a certain factory in the 1980s. I found that after it was cured,
you could scratch it off as easily as most other paints and primers. OK, it
might roughen the surface of the steel very slightly, on a microscopic
level, but any abrasive paper does that far more effectively.

I think (not sure) it was Which Magazine that tested a number of rust
inhibitors, many years ago, and found Hammerite to be exceptionally
effective. I've found it to be good too, but have never used it of car body
repairs as a primer.

Al