Homebrew PCBs

I've ground up artist's charcoal using 400 grit or 800 grit sharpening stone then add the powdered charcoal into india ink based on some polymer. I checked to see that the artist graphite did indeed conduct. Measured about 500 ohms per 6 "squares" (distance/cross sectional area) or so. Not very scientific but it will do.

Smilingcat

--- In Homebrew_PCBs@yahoogroups.com, "Jeff Heiss" <jeff.heiss@...> wrote:
>
> What are you using for through-hole activation?
> 
>  
> 
> Jeff
> 
>  
> 
>   _____  
> 
> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
> On Behalf Of smilingcat90254
> Sent: Thursday, November 29, 2012 5:55 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: [Homebrew_PCBs] Re: Want to plate drill holes for your double sided
> PCB's
> 
>  
> 
>   
> 
> Oh someone wanted to know what am I plating?
> 
> I was going to plate my drilled out hole with copper so that on double sided
> PC, i'm not having to stick a piece of wire and solder both top and bottom
> copper.
> 
> You could also use it to plate tin if you want. But your plating solution
> would have to be different.
> 
> And minor correction At 5 Amp you can plate 6"x6" double sided PCB not
> 6"x12"
> 
> 
> 
> 
> 
> [Non-text portions of this message have been removed]
>