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Vern

chucksea wrote:
>
> What's a good source for Ammonium Persulphate?
>
> Digi-key doesn't have it listed and I haven't found it locally yet.
>
> thanks
> chuckc
>
> ----- Original Message -----
> From: "Joan Ilari" <joan.ilari@TERRA.ES>
> To: <PICLIST@MITVMA.MIT.EDU>
> Sent: Wednesday, March 06, 2002 4:28 PM
> Subject: Re: [EE]: Making PCBs...
>
> > Nick,
> >
> > I have seen your page explaining the pcb manufacturing process : VERY GOOD
> !
> > (http://www.veys.com/nick/electronics_tutorials/howto/tut2/ )
> > It is a pity I haven't seen it a couple of years ago when I started with
> > this
> > method to manufacture my pcbs ! It would have spared me a lot of trial and
> > error hours :-(
> >
> > I STRONGLY RECOMMEND THIS METHOD to anyone home-making his/her pcbs !
> >
> > Some points about the process that I would like to highlight :
> >
> > - To take out the toner when the pcb is finished it is much easier to use
> > acetone (industrial or even of the kind the women use for removing the
> > paint from the nails : more expensive) than grinding the pcb.
> >
> > - It is very important to use the appropriate paper. Do not spare on the
> > paper : with glossy photoprint paper the success is guaranteed. I can make
> > pcbs with tracks going through 2 IC pads (2.54 mm distance) without too
> > much trouble.
> >
> > - As a reference : stay with the iron (full power) over the pcb board face
> > up
> > covered with a piece of cloth 1.5 minutes, moving the iron so as to
> achieve
> > a more uniform heating (not all the iron base has the same temperature)
> and
> > strongly press the iron against the board. Do not stay too much time or
> you
> > risk the toner spreading too much and getting tracks too wide.
> >
> > - To remove the paper it is better (according to my experience) to use
> very
> > hot water instead of cold water. In a couple of minutes the paper
> peels-off
> > without having to touch at it.
> >
> > >
> > > For ease, nothing beats the iron-on transfer method.  You can use glossy
> > > ink jet paper, laser print the layout on it and iron it onto the
> > > copper-clad.  It takes a bit of finesse but once you figure it out you
> > > can get pretty fine traces on there consistantly.
> > >
> >
> > Cheers
> >
> >
> >    Joan Ilari
> >
> >    Barcelona (Spain)    Tel. +34 93 431 96 39
> >    joan@ilari.org
> >
> > ================================================================
> >  ... I've seen things you people wouldn't believe. Attack ships
> >  on fire off the shoulder of Orion. I watched C-beams glitter
> >  in the dark near Tannhauser Gate. All those moments will be
> >  lost in time, like tears in rain ... Time to die ...
> >
> >                                     -Blade Runner -
> > ================================================================
> >
> > --
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> > email listserv@mitvma.mit.edu with SET PICList DIGEST in the body
> >
> >
>
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