Homebrew PCBs

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

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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.
 
 >
 
 >[Non-text portions of this message have been removed]
 
 >
 
 >
 
 > 
 
 >
 
 >[Non-text portions of this message have been removed]