Homebrew PCBs

How do you tin the CB's with Plummers Paste? CAn you instruct me? How good
does it do?

Thanks!!

Kim

----- Original Message ----- 
From: "lcdpublishing" <lcdpublishing@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, January 17, 2006 8:16 AM
Subject: [Homebrew_PCBs] Fixing traces... not fun but certainly doable!


> This weekend I etched some boards with .010" wide traces with .010"
> wide spacing. After etching I found a couple of traces "broken" so I
> had to repair them and with these old eyes, it wasn't easy but I did
> get it.
>
> I tinned the board using solder paste (plumbers paste) as I have
> been doing.  I then extracted some strands of conductor from
> stranded wire and tinned that.
>
> To make the "jumper", I laid the strand against the trace, and
> pressed down with the soldering iron tip and it held.  It worked
> fine for all the breaks I had to fix.
>
> I did try to drag solder over the gaps to bridge them, but couldn't
> get that to work.  Further complicating it was the small traces and
> close proximity of the traces - I would end up shorting out several
> traces together.
>
> While not an ideal solution, it worked pretty good.
>
> As to the reason for the breaks in the traces - just being in too
> much of a hurry.  After doing the toner transfer, I inspected the
> boards very good and did notice the missing toner.  Knowing that the
> Sharpie pen is too blunt to patch the spot, I just went for the
> etching.  I really should have cleaned the boards and tried the
> transfer process again - it would have been much faster and easier.
>
> Chris
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