I have never used the epoxy but I have used a couple of
varieties of "wire glue." There seems to be two kinds; those
that use silver and those that use carbon as the conductive
media. The silver tend to be much more expensive so I have
used the carbon type. I use them primarily for attaching
"real" wire to flex circuits. There are two primary
considerations. The carbon introduces resistance. In my
circuits the current is so low it doesn't matter but it
would probably be too much for a power source. The second is
brittleness. If the joint is unsupported it breaks easily. I
usually fold a piece of epoxy putty around both sides for
support.

Allen

> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-
> bounces@mit.edu] On Behalf Of Mark Hanchey
> Sent: Thursday, July 25, 2013 8:44 AM
> To: piclist@mit.edu
> Subject: Re: [EE] Best way to solder batteries (making a
> pack)?
>=20
> On 7/24/2013 10:20 PM, veegee wrote:
> > I just tested the car battery by hand, using two large
lag
> screws for
> > electrodes. I tapped them together against some scrap
> metal and made the
> > tap as short as I physically could. Luckily I was
wearing
> goggles - the
> > tip of one of the bolts completely melted off amidst a
> spectacular
> > display of sparks. A much larger weld was made than what
> I require.
> > There's definitely enough power available. The most
> critical factor here
> > is control.
> >
>=20
> MgChemicals makes a conductive epoxy but I haven't tried
> it.
> http://www.mgchemicals.com/products/adhesives/electric
> ally-conductive/silver-conductive-epoxy-moderate-cure-
> extreme-conductivity/
>=20
> Mark
>=20
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--=20
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