possible? absolutely! Heck its a lot easier since you don't have to
drill so many holes. I keep looking for cheap, decent SMD connectors
so I can drill even fewer holes.
I do think it means it is more likely you have to do double sided
boards and get good at doing "poor man's vias". All things
considered, its pretty easy though.
--- In Homebrew_PCBs@yahoogroups.com, "mikezcnc" <eemikez@c...> wrote:
> Does this mean that making a quality SMD PCB is possible?
>
> Mike
>
>
> --- In Homebrew_PCBs@yahoogroups.com, "Thomas P. Gootee"
<tomg@f...>
> wrote:
> > Don,
> >
> > I have recently updated my webpage on the toner transfer
procedure:
> >
> > The results seem to be basically PERFECT, EVERY TIME, now. And
> it's extremely quick, and easy.
> >
> > I give VERY detailed step-by-instructions for the complete
> procedure, plus the exact paper type and its source (only $0.33 per
> sheet!), etc.
> >
> > I've also posted PHOTOS of an example board that I made, showing
> the paper pattern and the pcboard at various stages during and
after
> the process.
> >
> > The example board includes trace widths from almost 1/2 inch
(12.7
> mm) down to around 2/300ths (0.0067) inch (0.17 mm), with between-
> trace spacings down to about 0.0067 inch, although I think that the
> smallest trace-width that's actually shown in the photos is
4/300ths
> (0.0133) inch (about 0.34 mm).
> >
> > I haven't tried making any traces or spacings that are smaller
than
> 2/300ths of an inch, yet. But the 2/300ths-inch traces and spaces
> that I HAVE tried were absolutely no problem at all. And the
results
> look excellent. (Even the little "o" characters that are part of
the
> %-signs that are etched out of copper in very small 4-point text
come
> out perfect. And their line/space features are even smaller than my
> smallest trace-widths and spacings.)
> >
> > I've made at least 20 boards this way, so far, with NO bad boards.
> >
> > The PCB-making-procedure webpage is at:
> >
> > ----------------------------------------------------
> >
> > http://www.fullnet.com/u/tomg/gooteepc.htm
> >
> > ----------------------------------------------------
> >
> > OT: If anyone wants any 1-sided boards made, from ∗∗BITMAP-
type∗∗
> patterns that could be emailed (or mailed), my teenage son is
> thinking of using my method to start a small business, making pcbs,
> probably for about $15 or $20 for a board that's up to about 4x6
> inches, with that price including the drilling of up to a couple
> hundred holes AND applying the silkscreen artwork (your greyscale
or
> bitmap image) to the component side. Turnaround time would probably
> be zero to one day. He's been making boards for ME, and is very
good
> at it. (And I would supervise.) If anyone's interested, or has any
> questions, just email me (Tom) at tomg@f... .
> >
> > Regards,
> >
> > Tom Gootee
> >
> > http://www.fullnet.com/u/tomg
> >
> > -----------------------------------
> >
> > ----- Original Message -----
> > Message: 5
> > Date: Wed, 30 Jun 2004 23:18:46 +1000
> > From: "Don Bradbury" <don282@d...>
> > Subject: Re: SCOTCH 8007
> >
> > Hi Bill, many thanks for the reply I think I am to basic with
> my needs for most people on this board. I don't make enough boards
> these days to get to the level of the others and I don't like the
> toner transfer system I find it is to uncertain for what I
need it
> for (10 GHz boards $1.45 sq.inch) but the same situation exists
here
> I have a number of sq ft. of negative board and I don't know if
> it will still work either.
> >
> > [Non-text portions of this message have been removed]