[sdiy] PCBs

[patchell]

    If you are in Canada, check out Advanced Circuits.  You can get boards
made in small quantities (2-5) with a 5 day turn for $33 each.  For very
small quantities, prices like this are hard to beet (there are a couple
other places that have similar deals).  And these are boards that come with
silk screen, solder mask and solder plating.  I have gotten two sets of
boards made using this deal.  I cannot complain about the quality.

David Reichert wrote:

> Well, I've been burned by sulphuric acid and hydrofluoric which is the
> second nastiest substance on earth (the first being Buckley's Cough
> Medicine) so I'm not all too fearful of working around chemicals.
>
> Nonetheless, I'd prefer to get a professional shop to do it. Trouble is,
> I've looked places up and they all seem to gear themselves around mass
> produced boards. Of course there may very well be somewhere nearby that
> can do smaller jobs for the hobbyist. Perhaps I'll ask at the shop where
> I buy all of my components.
>
> Thanks again for all of your answers,
> Dave
>
> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of John L Marshall
> Sent: Thursday, January 03, 2002 10:17 AM
> To: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] PCBs
>
> Etch boards in microseconds - nitric acid + sulpheric acid + glycerine
>
> ----- Original Message -----
> From: Jim Patchell <patchell at silcom.com>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Thursday, January 03, 2002 7:04 AM
> Subject: Re: [sdiy] PCBs
>
> >      I think that is Nitric Acid....YikeS!
> >
> >    If it was Nitric Acid (HNO3), this would produce an orange gas
> (NO2),
> > which is very toxic.  If you want real fast etching, you add
> hydrocloric
> > Acid to the mix (HCl), which would probably reduce the etching time to
> > mere seconds....
> >
> >    However kids, please don't try this at home.  Nitric Acid is nasty
> > enough, mixing Hydrocloric Acid in with it can be downright dangerous
> > (the stuff will even disolve gold in this combination).  It also make
> > very nasty burns on your skin.
> >
> >    -Jim (reformed basement chemist)
> >
> > Sowa Roman wrote:
> >
> > > I agree totally with Jim.
> > > I don't do PCBs at home for a long time since I found out how nice
> and
> cheap
> > > they can be made at the fab. Myself I only make boards that can be
> made
> with
> > > Dremel cutting wheel.
> > > Just for the look of well made soldermasked PCB it is worth it to
> pay a
> > > little
> > > extra and not have fingers burnt with chemicals.
> > >
> > > But,
> > > when I was making them home, I used also nitrogen acid (not sure if
> it's
> > > proper
> > > english name of it). Good resuld in short time, but little dangerous
> because
> > > of
> > > produced gass (hydrogen?).
> > >
> > > Roman
> > >
> > > ""-----Original Message-----
> > > ""From: patchell [mailto:patchell at silcom.com]
> > > ""Sent: Thursday, January 03, 2002 5:29 AM
> > > ""To: sysyphus at sympatico.ca
> > > ""Cc: synth-diy at dropmix.xs4all.nl
> > > ""Subject: Re: [sdiy] PCBs
> > > ""
> > > ""
> > > ""    I learned to design printed circuits at my first job.  I
> > > ""would check the
> > > ""layouts done by the layout guy (this was back in the bad old
> > > ""days when this
> > > ""was done with tape on mylar).  Eventually, I started fixing
> > > ""the problems
> > > ""myself, and then when the layout guy went to another job, I
> > > ""took over those
> > > ""chores.  Doing layouts is more of an art.  If you want to see
> > > ""some good
> > > ""examples of PCB layouts, you can go to my web site.
> > > ""
> > >
> > >
> > > ---------------------------------------------------------
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> > >
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> > >
> > >
> > >
> > >
> >
> >

--
 -Jim
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* Visit:http://www.silcom.com/~patchell/
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* -Yogi Yorgensen
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