In article ,
alan_m wrote:
Sand (or grind) it down to bare clean steel then repaint. No such thing as
a rust killer that works for this sort of thing. It would need to get
under the surrounding paint, and none do.


Capillary action would probably get phosphoric acid into more difficult
spots.

If you're not interested in a lasting repair it 'probably' would. But then
just slapping some paint on top of the rust will last a while too.

--
*If at first you don't succeed, then skydiving definitely isn't for you *

Dave Plowman London SW
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