Homebrew PCBs

On Sat, 24 Nov 2007, Dave wrote:

> Is tinning necessary? What is the most cost effective way to buy the
> tinning solution and how is it applied? I usually buy bulk if things
> don't have shelf life to worry about.

I tin my boards because they look nicer, in the main! (The copper
tarnishes rather fast).

The tinning crystals last a longn time, but made up solution breaks down
after a few months - so make it up in small amounts.