Homebrew PCBs

We call it "scratch and etch" here.
I think someone still uses it in conjunction with a pen plotter carrying a  
sharp tip to do the scratching.

It seems a slow and inferior process to me.

ST



On Sat, 13 May 2006 17:43:41 +0200, gerard_f6eeq <f6eeq@...> wrote:

> Hello,
> I am new to this forum, and may be this question was already asked.
> In the description of Pic'n mix and Pic a star VFO and Transciever
> (see corresponding Yahoo group forums), Peter G3XJP explains his
> method for a relatively complicated board.
> The copper is sprayed with paint, and after it has dried, the copper
> to be removed is revelated by scratching the paint with a more or
> less sharp point. After that, it is etched. He say that this is easy
> and has the advantege to give large ground planes which is better
> for HF work.
> This methos has been used for a DDS associated to a PIC micro, which
> means a lot of very fine tracks.
> Does anyone know this methos and has used it ?
> Is it worthwile to give a try ?
> I have Sprint Layout, and although this is not the best PCB design
> soft, it is easy to use for simple designs, so I do not know what to
> think.
> Thanks for help.
> Gerard, F6EEQ