[TowerTalk] why not regalvanize?

[Tom Osborne]

Some of the products on the market, like Ospho, really work good on rust, 
but the problem is that as long as there is rust, it will keep working.  It 
can eat all the way through some pretty hefty metal, and weaken it if it is 
really rusty.
Tom W7WHY


>Question:
> Does painting over rust ever really *stop*
> the rust or merely cover it over so it
> continues to erode and there is an unexpected
> failure?