Make your own tin electroless tin plating solution, see:
<
http://www.voodooengineering.com/index.php/tinning/87-diy-tin-plating-solutiion>
All chemicals available on ebay
Malcolm
I don't suffer from insanity I enjoy it!
Mene, mene, tekel, upharsin
The writing is on the wall.
Ha-ktovet al ha-kir
--------------------------------------------
On Thu, 8/15/13, Harvey White <madyn@...> wrote:
Subject: Re: [Homebrew_PCBs] silver coating
To: Homebrew_PCBs@yahoogroups.com
Date: Thursday, August 15, 2013, 3:18 PM
On Thu, 15 Aug 2013 07:14:57 +0100 (BST), you
wrote:
>Hi
>Thanks for the quick response
>See what I mean by price, if you start using that then
just as well buy ready made PCBs and forget DIY
>Lets see if theirs any other ideas out there
The liquid tin that I use (MG chemicals) will last about a
year's
production of boards, so the cost per board is not horrible.
The same
size board (professionally done) is at least 22.00 USD,
I'm going to
guess that the tinning adds between 50 cents and a dollar to
the board
cost, and I suspect that this is a high cost based on a one
year use.
The other way (which I have not heard of being done at
home), is HASL,
Hot Air Solder Leveling. I can see several ways of doing
it, but I
would worry about the stress on the epoxy bond due to all
the heat.
The chemical tin plating is not a hot process.
Harvey
>
>
>________________________________
> From: James <bitsyboffin@...>
>To: Homebrew_PCBs@yahoogroups.com
>Sent: Thursday, 15 August 2013, 7:04
>Subject: Re: [Homebrew_PCBs] silver coating
>
>
>
>
>On 15/08/13 18:00, David wrote:
>>
>> Hi
>> Do any of you people here know of a quick and cheap
way to tin copper
>> PCB tracks before populating the board?
>> With all the modern chemicals around these days
theirs bound to
>> something out there
>> In the past have used the manufactured stuff which
you just put in a
>> bath for a while and job done but its to
expensive.
>>
>There is basically that (tinnit, liquidtin), and a
product called "Cool
>Amp" http://www.cool-amp.com/cool_amp.html
>
>I've never found any reasonable "home
brew" recipe for such a product.
>
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>
>
>
>
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