surface prep is more important than the paint.
Here is a steel tub front that came out after 4 years of regular usage. 4 years ago this area had some rust, it was all sanded off and degreased with extreme care, then 3 coats of Rust Bullet used, plus three coats of a high end epoxy for commercial tanks used. The paint did not fail at all, maybe in just one place.
The sandwich is almost as thick as a credit card.
In one spot it somehow failed, maybe due to a coin, surface prep error, bad luck, who knows.
Once opened the waters pressure due to the drum caused it to open up more, ie peeling due to cyclic fatigue. About 3 months ago I could hear something of a high pitched nature when one tuned the drum in one direction, but not another. This piece or another had bent out and was touching the drum.
Thus it looks like that the water was helping debond the rust bullet slightly with each usage once a breach occured. The dangerous thing is that water gets trapped behind a debonding event and can cause corrosion to quicken even more. About a couple of square inches were not bonded anymore; the rest is like it is welded on. This is with a surface prep I though was like for space flight, thus there is probably a reason paint is used in washers.
IN the LG thread of Supremewhirpol's, he is using coal tar epoxy. This is often used with steel boat hulls and is maybe a good choice too. Epoxy paint has so *give* too it, and coal tar adds even more give.
I have a brand new tub front that I found recently , thus this front will not be used again.
That brown stuff is some sticky goo that comes off with 409 cleaner. The spinning drum is right next to this breach, a fraction of an inch away. There was a penny down in the sump area, maybe this caused the breach.
