The conductive ink?
I purchased the 50 gram bottle from Think and Tinker in the summer of 2009. I hadn't gone bad or anything so far. I've done maybe 20 4x6 boards since then. I feel like I can easily go another year.
Stay in touch I'll let you know.
--- In Homebrew_PCBs@yahoogroups.com, Erik Knise <elknise@...> wrote:
>
> This is actually a great link. Thank you Chuck.
>
> I have only made one board so far and I've been discouraged because I've
> needed to put vias under some surface mount parts (microcontrollers) but the
> wire method doesn't always work well for that. Those kits must last a long
> time but I'd be needing to do a lot of boards to make it worth while. Any
> idea on the shelf life of that stuff in a sealed container?
>
> On Thu, Aug 19, 2010 at 2:42 PM, fredbutz <fredbutz@...> wrote:
>
> > I like it not just for the connection between layers.
> >
> > I love the way the solder is wicked into the hole when soldering a thourgh
> > hole plated board. I hate the way the solder tends to just bubble on top of
> > the layer when soldering without through plating.
> >
> > The acid is so diluted it doesn't burn or bubble or anything.
> >
> > I have it down where it takes a few minutes to apply the ink. The wait
> > whil it oven cures I work on something else. The plating takes 12 minutes.
> >
> > But to each his own.
> >
> > --- In Homebrew_PCBs@yahoogroups.com, "Bob Macklin" <macklinbob@>
> > wrote:
> > >
> > > Interesting but expensive for doing just a few boards. Also I really
> > don't
> > > like working with battery acid.
> > >
> > > It would take me longer to do this for 5 or 10 boards than it will to
> > insert
> > > wires.
> > >
> > > But thanks for the information.
> > >
> > > Bob Macklin
> > > K5MYJ
> > > Seattle, Wa.
> > > "Real Radios Glow In The Dark"
> > > ----- Original Message -----
> > > From: "fredbutz" <fredbutz@>
> > > To: <Homebrew_PCBs@yahoogroups.com>
> > > Sent: Thursday, August 19, 2010 10:35 AM
> > > Subject: [Homebrew_PCBs] Re: Copper Foil Vias, Correct URL
> > >
> > >
> > > >I do it all the time.
> > > >
> > > > http://voodooengineering.com/index.php/pcbprocess/plating
> > > >
> > > > I don't think its hard at all.
> > > >
> > > > Follow Think and Tinker's steps using Caswell Plating's solution.
> > > >
> > > > Chuck
> > > >
> >
>
> --
> Erik L. Knise
> Pacific Shipping Company
> Seattle, WA
>
>
> [Non-text portions of this message have been removed]
>