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
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--- 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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