Homebrew PCBs

JB Weld is not conductive...

http://www.jbweld.net/faq.php



Frank P.

--- In Homebrew_PCBs@yahoogroups.com, AGSCalabrese <agscal@...> wrote:
>
> >
> > On Jun 5, 2010, at 2:13 PM, Chris wrote:
> >
> > One of the things I don't like about making PCBs is soldering in a  
> > bunch of wires to connect top traces to bottom traces. The more  
> > surface mount stuff I use, the more often I need to add special vias  
> > as I no longer have component legs to use for that purpose.
> >
> > I have used J-B Weld on a number of "emergency fixes" over the years  
> > and have been impressed with its utility. I believe this is a  
> > metalized epoxy which I assume should be conductive. I just mixed up  
> > a smal batch and will have to wait till late tonight or tomorrow to  
> > check it when it finally cures.
> >
> > If this does conduct, then I was thinking I could apply this way....
> >
> > 1) Etch board
> > 2) Tin board
> > 3) apply clear contact paper to both faces of PCB
> > 4) Drill all via holes
> > 5) Use a spatula to smear the epoxy into all of the holes
> > 6) After curing, remove contact paper
> >
> > I suspect I might have small bumps of epoxy which if are a problem,  
> > a light sanding would knock them down. If the sanding is required I  
> > could put the board back in the liquid tin again.
> >
> > I probably won't be able to do a full test for a couple of weeks but  
> > thought I would announce it to see if anyone else has tried this.
> >
> > Chris
> >
> >
> >
> > 
> >
> 
> Intergoogle says that JB Weld is not conductive.
> You may find this interesting....
> http://www.circuitmart.com/mart/49690.shtml
> Gus
> 
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>