Etching works great for me as well. I have etched many boards by
printing with a bubble jet onto overhead projector transparencies and
using them as a mask to expose the pre-sensitized boards to UV light.
It is somewhat time consuming, but doesn't require as much accuracy
as milling the traces. One drawback is that it seems like if you get
a tiny drop of copper sulphate anywhere and it somehow rehydrates,
you have the stuff all over the place.
I converted to CNC milling the boards because it was a cool project
to build and it is fun to watch. The acid isn't all that fun to watch.
Dave
printing with a bubble jet onto overhead projector transparencies and
using them as a mask to expose the pre-sensitized boards to UV light.
It is somewhat time consuming, but doesn't require as much accuracy
as milling the traces. One drawback is that it seems like if you get
a tiny drop of copper sulphate anywhere and it somehow rehydrates,
you have the stuff all over the place.
I converted to CNC milling the boards because it was a cool project
to build and it is fun to watch. The acid isn't all that fun to watch.
Dave
--- In Homebrew_PCBs@y..., hans@c... wrote:
> Been following all this about perf. boards and milling etc.
>
> I like the idea of milling but it seems the prep. work is
tremendous.
>
> Doing pref. boards then PCB seems like hard labor.
>
> I'd like to have comments as to why pre-sensitzed PCB and etching
is not
> mentioned and what you consider is so bad with it ?
>
> Best Regards
> Hans W