Forgot to mention that the stuff my girlfriend donates is fingernail
polish!! Sorry bout that :-) A fast drying enamel. Comes off
easily with lacquer thinner. Just like the TonerTransfer. I usually
use red cause, not only does she have many shades of red, but I like
the color cause is stands out. Keep on Etching..... afn T
--- In Homebrew_PCBs@yahoogroups.com, "TonyB" <tbarros@...> wrote:
>
> A fine tipped brush and signpainter's ink works fine also. U want a
> paint that is not water soluable, and dries quickly. Sharpies are the
> right type ink, but go on much too thin. When push comes to shove, I
> just get my girlfriend to donate one of the many colors she doesn't
> use anymore. I even use the internal brush!! The idea is to save the
> copper. U can always scratch off the excess copper after the pcb is
> etched. Etch on, Dudes! afn Tone
>
> --- In Homebrew_PCBs@yahoogroups.com, Gordon Couger
> <gordon.couger@> wrote:
> >
> > Why not just a brush and a few coats of India Ink or paint. You can
> > make a mask if you can't do it free hand. A good bush with long
> bristles
> > is easier to use than it looks.
> >
> > Gordon
> >
> > dl5012 wrote:
> > >
> > > Hi John,
> > >
> > > Don't bother trying the ultrafine point Sharpie markers. The ink
> > > doesn't work as an etch resist... Same goes for the "huge" chisel
> > > point industrial marker. I thought that tip would be good for going
> > > over large copper fill areas...
> > >
> > > I've used the black fine point Sharpie as an etch resist for
> > > decades. For narrow traces, I've used slots cut in transparencies
> > > as templates. I use an eraser shield and a firm eraser to clean up
> > > the edges. Eraser shields are surprisingly difficult to find these
> > > days; drafting (drawing by hand) must be becoming a lost art. The
> > > last batch I bought at a craft store; poor quality with sharp edges,
> > > but better than nothing. In a pinch, you could use a transparency
> > > with slots cut out.
> > >
> > > Another option is to use "Ruby" tape. This is a red transparent
> > > tape they used to use this in the old days to layout PCB (and
> > > integrated circuit layout) by hand. It works fine as long as you
> > > don't have any "crossings" where etchant can get under the tape.
> > >
> > > Yet a third option is to locate some rub-on transfers. I have some
> > > sheets that have traces and pad patterns (but haven't seen them for
> > > decades...).
> > >
> > > Regards,
> > > Dennis
> > >
> > > --- In Homebrew_PCBs@yahoogroups.com
> > > <mailto:Homebrew_PCBs%40yahoogroups.com>, "Jan Kok" <jan.kok.5y@>
> > > wrote:
> > > >
> > > > I believe there is an "ultrafine point" sharpie.
> > > >
> > > > I haven't tried it, but maybe you could cut two sides off a "fine
> > > > point" sharpie with a razor blade, to get a very narrow tip.
> > > >
> > > > Cheers,
> > > > - Jan
> > > >
> > >
> > >
> >
>