Homebrew PCBs

I've found that it works better if you dab the sharpie so that the 
ink kind of puddles up.  Leaves a thicker layer of ink.

--- In Homebrew_PCBs@yahoogroups.com, "ransom peek" 
<ransom.peek@c...> wrote:
> First time tried to make pcb, used Sharpie Ultra Fine marker and 
ferric
> chloride from Radio Shack.  After 10 minutes in solution, with
> agitation, market lines were degrading badly.  Stopped the etching,
> applied more marker, and etched for another 8 minutes (roughly).  
Still,
> the copper areas are pitted, very much degraded - the pen just 
doesn't
> do a good job - the ferric chloride does attack it. 
> 
>  
> 
> Am I doing something wrong?  My plan is to go over all the traces 
and
> pads with solder to ensure continuity for this prototype, but in the
> future.    Do I need a different method or different marker pen?
> 
>  
> 
> Also - I find that isopropyl alcohol does an ok job of removing the
> marker - is this a good choice?
> 
>  
> 
> Ransom Peek
> 
> Fort Collins CO
> 
> 
> 
> [Non-text portions of this message have been removed]