Homebrew PCBs

On Fri, 14 May 2004 15:24:08 -0500, Brian Schmalz <brian.s@...> 
wrote:

> Hi. I use Scratch-n-Etch as my only method of board manufacture. I really
> like it and it works OK for what I need it to. I use Machinists Blue as 
> the
> resist and the carbide point to a metal scratcher pen thing (from Home
> Depot) in an HP plotter.
>
> Just out of curiosity, who is the person responsible for thinking up this
> method? (I heard about it from a friend in my robotics club. And he's a 
> nice
> guy.0
>
> *Brian
>


I think there are certain limitations to scratch and etch.
They are very similar to the limitations you get with milling PCBs.

There is a difference between milling the isolation, or printing the 
tracks.

It is a good idea if you can live with the limitations. I think it is 
better
than plotting a positive image (because you need no fill and no applying 
of ink).

I doubt it works with dot matrix printers.

ST