How long does it take for phosphoric acid to dry?

[Michael Horowitz]

I've begun removing rust from my fuselage.
I got one bay down to metal and applied phosphoric acid to remove any
rust in the pits.
How long should it take this stuff to dry? - Mike

[cavelamb[_2_]]

Michael Horowitz wrote:
> I've begun removing rust from my fuselage.
> I got one bay down to metal and applied phosphoric acid to remove any
> rust in the pits.
> How long should it take this stuff to dry? - Mike
>


Depends, of course, on how wet it is.
Like on the bottom of the tubes?

But generally, half an hour.
PROVIDED there is some light surface rust to kick it.