"jimofc300" <
jim@...> writes:
> 1) I just purchased a bottle of Liquid Tin. In the bottom of the
> (unopened) bottle, there's a lot of white precipitate and a few
> black things. It doesn't mix in if I shake it. Is this normal or did
> I receive a defective product?
It's more of the tin salts, to keep the solution saturated.
Eventually that stuff dissolves as you use up the tin and it needs
more.
> 3) Can I re-use Liquid Tin by pouring it back into the original
> bottle? Or should it be discarded after one use?
Definitely re-use it!
> 5) Any hints on using Liquid Tin to ensure good conductivity and
> prevent copper corrosion?
Soak at least five minutes, flipping the board over occasionally and
agitating it for an even coat. Rince with COLD water as soon as it
comes out, and gently wipe with a paper towel to dry the tin before it
has a chance to start corroding from the water. Cold dry tin gives a
very pretty surface.
A thin tinning seems to be affected by flux, though, exposing the
copper below.