Homebrew PCBs

Hi Mark,
Good idea. I was planning to use steel brush. I can try roller method, my only concern is if surface is not flat how to guarantee to touch all traces with roller.  
Cheers,
Volkan

--- On Thu, 4/23/09, Mark Mickelsen <MarkMickelsen@...> wrote:

From: Mark Mickelsen <MarkMickelsen@qwest.net>
Subject: RE: [Homebrew_PCBs] Re: Free bottle of Liquid Tin
To: Homebrew_PCBs@yahoogroups.com
Date: Thursday, April 23, 2009, 12:31 PM











    
            
            


      
      Hi Volkan,



Could you possibly rig up some sort of steel roller to go over the surface

of the board to make starting the reaction easier and more thorough?  I'm

not familiar with the process at all, but that was the first thing I thought

of when I read your post about electroless plating.



Regards,



Mark 



_____  



From: Homebrew_PCBs@ yahoogroups. com [mailto:Homebrew_PCBs@ yahoogroups.. com]

On Behalf Of Volkan Sahin

Sent: Thursday, April 23, 2009 1:21 PM

To: Homebrew_PCBs@ yahoogroups. com

Subject: Re: [Homebrew_PCBs] Re: Free bottle of Liquid Tin



Hi Mike,

I used their  electroless nickel kit. It works fine only problem is you need

to touch every trace with a steel rod to start the reaction. Plating

thickness is really good and it is better than electroplating very uniform

and shiny because of that it is much better than immersion tin plating.

My application was THP, after activating holes with conductive ink I used

electroless ink to plate the holes.  Soldering is not so difficult. 

Cheers,

Volkan



--- On Thu, 4/23/09, Mike Oyama <mikesb0x0fm4il2@

<mailto:mikesb0x0fm 4il2%40gmail. com> gmail.com> wrote:



From: Mike Oyama <mikesb0x0fm4il2@ <mailto:mikesb0x0fm 4il2%40gmail. com>

gmail.com>

Subject: Re: [Homebrew_PCBs] Re: Free bottle of Liquid Tin

To: Homebrew_PCBs@ <mailto:Homebrew_ PCBs%40yahoogrou ps.com> yahoogroups. com

Date: Thursday, April 23, 2009, 11:23 AM



I've been thinking about picking up an electroless plating kit from caswell.



The electroless nickel kits are 30% off till the end of the month, making



the mini kit around $50.



I know the pros use electroless nickel followed up by a gold immersion



process. Will my boards work if I don't add gold plate to the nickel? Will



nickel work as good as tin?



>



> > You definitely get a better plating by using a electroless Tin



> > plating. Using solder and an iron produces a bit of waviness or



> > bumpy surface (not to mention the flux which needs to be scrubbed



> > off). The elctroless Tin plating results in a very smooth layer.



> >



> > I used to have the recipe for a wonderful electroless Tin plating



> > solution based on Stannous Chloride, Sodium Chloride, and Sodium



> > Cyanide. Now that I'm older and wiser (and still alive), I no longer



> > use that particular material.



> >



> > Dave



> >



> 



>



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