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Subject: Tinning with plumbers pastes was- Fixing traces... not fun but certainly doable!

From: "lcdpublishing" <lcdpublishing@...>
Date: 2006-01-18

Hi Kim,

Pretty easy actually and yes it works good. Apply a thin coat of
the plumbers solder past over the board, heat it with a heat gun
till the solder melts and flows onto the traces. Keep the heat gun
moving or you will burn the PCB.

It was discussed in much more detail a few months back so you should
check the archives.

Chris












--- In Homebrew_PCBs@yahoogroups.com, "Kim Currier"
<kimcurrier@s...> wrote:
>
> 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@y...>
> 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
> >
> >
> >
> >
> >
> >
> > Be sure to visit the group home and check for new Links, Files,
and
> Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBs
> >
> > If Files or Photos are running short of space, post them here:
> > http://groups.yahoo.com/group/Homebrew_PCBs_Archives/
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> > --
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1/16/2006
> >
> >
>