--- In
Homebrew_PCBs@yahoogroups.com, "thomascouey" <tcouey@...> wrote:
>
> This actually gave me an idea. It might be hard to implement, but if
> you could get a thin masking material and laser etch your pattern
> through it so that it becomes something like an eraser shield (if
> anyone's familiar with the old pencil and paper drafting days), then
> use it as a mask and spray on a resist (hair spray?).
It's been discussed fairly recently. I'll bet you can, because it's
been pointed out that the copper is very difficult to cut with the
laser, so anything that will absorb the laser would probably work.
> Is there a material out there that would melt away at very low
> temperature, but be robust enough to handle? And how hard would it be
> to get a powerful enough laser and build the beam splitters? I
> suppose you might be able to adapt the scanner module from a laser
> printer... Just thinking out loud here. It's probably not
> economically feasible, huh?
The laser from a laser printer won't be nearly powerful enough. You
can buy laser engravers, that should work. Rather expensive for the
average person.
Steve Greenfield