You seem to know a lot about rust prevention and fixing existing rust condition.. how about a handy "assay Tuna's DIY Guide to Fixing Rust" post somewhere so some of us less-edumacated can do what you're doing?
This
vonscoobie guy
seems to know his itshay, so whenever he posts something about rust I pay attention. That thread link has several posts from him.
seat safety switch has this fetish for rust buckets so he's someone I pay attention to as well (don't tell him as I don't want him to think he's useful or anything).
During my research for the stuff below I found this website
http://autobodystore.com/forum/forumdisplay.php?5-Rust-RepairMy story - I'm a bit of a novice, but it all started years ago when I used to use a product back home called
Ranex Rustbuster. This product is basically phosphoric acid which is used as a rust conversion process and has been around for decades:
converts rust from a detrimental oxide to a beneficial phosphate of iron, chemically destroying any rust present and leaving the surface in a suitable condition for painting when completely dry
I'm not a panel beater, nor a painter, I just want to stop the rust from progressing any further. You can coat rust with something to prevent the oxidation process from continuing but ultimately it will wear off or get scrubbed/washed off. I intend to; i) scrub off as much loose rust as possible, ii) convert the oxide, iii) and
then coat it to further hinder the oxidation process.
The products you see in the photos re-linked below:
-
SEM Rust Mort is a phosphoric acid based rust converter. It needs to be coated.
-
Zero Rust is an
oil based modified alkyd enamel, and I thought I would give it a try. Apparently it's UV sensitive.
-
Clear POR-15 is a
polyurethane coating. Also UV sensitive and not the best surface for painting over. I thought I would give it a try.
- Spray Fluid Film is a
Lanolin based soft gel coating. You can get into all sorts of places with this stuff. I consider this a preventative spray. I thought I would give it a try, but I don't think it comes close to:
-
Eastwood Internal Frame Coating. There is all sorts of advertising hype about this product which I'm still filtering through. It claims to convert rust, but the chemist in me is looking for the reaction. This stuff appears to be the bomb for internal panel/crevice protective coating.
Even though they say you can, I would
never apply any of these coating products over rust without first removing as much rust as possible and then converting the rust. You can spray paint a turd but it will still be a turd underneath - the same applies to rust.
These products obtained from KMS (Calgary):
Spray Fluid Film found at Canadian Tire: