Hi Steve,
I feel by using the Scratch and Etch method, pen speed
and flow will be out of the picture. Most software will allow the
outlining to be done. I don't acid etch here! But I got into it
trying to help someone else. I even bought a plotter. I bought the
plotter to see how it is made. I want to create a really cheap
PCBMill next. The one I sell plans for works great. I am looking
to cut the building time and cost way down. While working on the
new PCBMill the Light bulb idea hit. Then the Scratch and Etch
idea! I hope somebody will try it and report back.
John
--- In Homebrew_PCBs@y..., Steve Greenfield <alienrelics@y...> wrote:
> 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@k...> 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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