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Message

SMD boards (was Re: Staples #471861 ...)

2004-07-01 by mikezcnc

Phil, I meant: is SMD PCB possible using that staple paper #471861 
AND Tone Transfer. If you are using something else, can you tell us 
what paper and printer are you using? I am revisiting TT after few 
months. My last attempt wer bad for SMD. I nderstand that a good 
fuser is neccessary for SMD especially.  Mike


--- In Homebrew_PCBs@yahoogroups.com, "Phil" <phil1960us@y...> wrote:
> 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]

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