Krzysztof Juszczak wrote:
>
> Check this link
> http://il.farnell.com/cif/bs200/tinning-salt/dp/4148071
>
That's NOT an imersion tin plating for copper, it's the salt used in the
outdated and stupid roll tinning machines. It's used on top of melted
solder on the back of the lower roll, for proper distribution of tin
across the stainless steel roll.
> From: Homebrew_PCBs@yahoogroups.com
> [mailto:Homebrew_PCBs@yahoogroups.com]
> On Behalf Of liquias
> Sent: 26 November 2010 09:44
> To: Homebrew_PCBs@yahoogroups.com
> Subject: [Homebrew_PCBs] Liquid Tin
>
> Hi,
> has anyone ever heard of this "Liquid Tin" by m.g. chemicals ?
> this material is supposed to plate the PCB after the etch process, and
> passivate the copper.
> I never seen this stuff sold anywhere, and I can't get it since I live
> in
> Israel.
>
> first, a link to see it with your own eyes:
> http://www.youtube.com/watch?v=3aEwTRMEkOM
> look at around 3:30 minutes...
>
> second, does anyone know how to home-brew this material ? Is it
> dangerous to
> use ?
>
> third, does any of you use any other process to passivate the copper
> after
> etching ?
>
> Thanks in advance,
> Liquias.
>
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