Homebrew PCBs

Yep, far too long to expose, and the problem of "blooming". UV
laser, anyone?

That sounds do-able! It would just require modifying a pen with one
of those carbide point marking pens. I think you could probably
just spray something like one coat of black fast drying laquer to
scratch through.

And one of the things I've always liked doing to boards I make is
sign them. Couldn't do that when I made some with the vinyl cutter.

So the only issues are paint that will scratch away cleanly and
that it leaves a wide enough opening after etching.

Steve Greenfield

--- crankorgan <john@...> wrote:
> Hi,
>    Nobody liked my light on a plotter idea. I was told the
> light source would have to move too slow. The board would take
> way to long. Ok, I use Mechanical Etching bits myself. But what
> if you coated the whole board with resist. Then you put a sharp
> point in the plotter. Have the plotter do isolation paths. Then
> the board goes to the acid.
> 
>                                           John


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