PCB pens

[Buck Buchanan]

Hi Batz, that was me and the particular device was the Circuit Works
conductive pen that yes, was intended for repair.

However, your idea is pretty much EXACTLY the same one I had except I
was hoping to solder over the jumps for strength.

I found that yes, if you solder each pad, and then clean REALLY WELL,
you can "connect the dots" with the pen and it works.  However, being as
how the stuff dries with the consistancy of "white out" or "liquid
paper", you'll find yourself doubting both the reliability and
resistivity of the new painted on trace.  I couldn't bring myself to
trust that a board made in this matter would both perform well and last
for any duration.  Also, if you plan to draw a long trace, you'll need
some space as the paint's a little hard to control.  Maybe you can come
up with a new twist on the technique that will improve reliability.

Good luck on your quest!

Buck

Batz Goodfortune wrote:

> What I need to know about is these conductive pens someone was talking
> about some time back. I have never seen one so I don't know a thing about
> them. But someone had tried them and declared they were crap for making
> boards straight up. they're designed for repairing boards I believe.
> 
> So what I need to know is how crap they are for that purpose? What I want
> to be able to do is get "doughnut board" and join the dots. Without having
> to solder them with wire. What's even more enticing is that I can get
> double sided doughnut board. Which would make wiring quite interesting.
> Assuming these pens would actually be a workable solution.
> 
>