--- In
Homebrew_PCBs@yahoogroups.com, Dave <theschemer@...> 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.
> Thanks,
> Dave
>
I do not tin my boards. I use the positive method using the MG
Chemcials 600 series boards. I leave the resist on, you do not have
to remove to solder. I also once I have loaded the board spray the
bottom with clear laquer. The clear laquer would also work well if
you do TT method as it will seal the copper.