Hi,
Don't you now any links to sites that explain this with pictures?
and do you know where to buy equipment to do this?
Thanks for the many replies :)
--- In Homebrew_PCBs@y..., JanRwl@A... wrote:
> In a message dated 06-Dec-01 10:10:12 Central Standard Time,
> thor918@o... writes:
>
>
> > Does anybody know how to print on top of the pcb.
> >
>
> Thor: This is done by "silk-screening". A photographically-
made "screen"
> (once made only of silk, but I think, nowadays, some tougher
polyester is
> used?) is used as a stencil, and PAINT is "squeegied" onto the
board. The
> screen is liquid-tight in areas where you do NOT want the paint,
and only the
> "screen" (open weave of the "silk" cloth) is clear, allowing paint
to squeeze
> through. This is an "art" which is used in more than just PCB
work! All
> kinds of posters, signs, labels, etc., are made by the
familiar "silk-screen"
> method.
>
> HOWEVER! If you just MUST have some labelling on the "top" of a
PCB, but
> wanna make only ONE, and NOT spend all that for the frame, silk-
screen stock,
> developer, squeegie-tool, paint, etc., you can use IMPRESSION
lettering
> and/or patterns. Good art-supply stores will have more than just
letters in
> that stuff! You want white or maybe yellow, but NOT black, etc.,
as those
> colors hardly show on a FR-4 board. Once you have "rubbed off"
your entire
> pattern, words, labels, etc., then SPRAY the top with clear enamel
or
> lacquer. AFTER you have etched! And be careful not to get any of
that on the
> "copper side"! It will look as nice as your steady hand can do
that! I have
> done this countless times! Also, for making "professional looking"
panels!
> Dial-numbers, ON/OFF, etc. Just SPRAY it after all the rubbing-
off/on is
> done!
>
> Jan Rowland