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.
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]