Billy: In my "for what it's worth " dept, I brewed up some of your etching
solution with what I could get and it didn't work. the h2o2 from the stores
is undoubtedly way to weak (3%) I'll go look for some better stuff in the
next few days and see what I can do. Ispent 45 minutes watching the stuff
just now with a small piece of pc board 1.5 in. sq. mol.So much for that
!!!comments from others tells me the peroxide was the problem. Oh, well,
tomorrow is another day. 73 for now.
carl / kz5ca
----- Original Message -----
From: "Billy Ward" <billydeanward@hotmail.com>
To: <amps@contesting.com>
Sent: Sunday, July 15, 2001 8:29 PM
Subject: Re: [AMPS] Making PC boards/Silkscreen
>
> Here is the link to my new pc board site but there is no information there
> as of yet. Any critique will be appreciated--I need ideas as to what else
> to include.
>
> http://pcboards.topcities.com/home.html
>
> Billy Dean Ward
>
>
> >From: "carl seyersdahl" <carlseye@tampabay.rr.com>
> >To: "Billy Ward" <billydeanward@hotmail.com>
> >Subject: Re: [AMPS] Making PC boards/Silkscreen
To: <amps@contesting.com>
> >Date: Sun, 15 Jul 2001 19:59:03 -0400
> >
> >Billy: I just read your msg. on h2o2, etc. I went and looked at a bottle
of
> >the stuff in the medicine cabinet, and it isn't marked as to the % of
> >strength. It's from Publix supermarket here locally. At least now I know
> >what to look for or ask for. I wasn't aware of the the stuff being
diluted,
> >altho I guess I should. I seem to remember something about that stuff
when
> >I
> >was younger(long time ago!!!)
> > add me to your list of interested people!!! 73
> > carl / kz5ca
> >----- Original Message -----
> >From: "Billy Ward" <billydeanward@hotmail.com>
> >To: <amps@contesting.com>
> >Sent: Sunday, July 15, 2001 7:30 PM
> >Subject: Re: [AMPS] Making PC boards/Silkscreen
> >
> >
> > >
> > > I have received a LOT of personal email from those that are interested
> >in
> > > making quality pc boards "in the kitchen" and "the back yard". As a
> >result,
> > > I am in the process of starting a website dedicated to that cause and
> >will
> > > most likely be offering some of the necessary "ingredients". I doubt
> >that
> >I
> > > will offer the acid and the H2O2 because of the problems associated
with
> > > shipping chemicals.
> > >
> > > Most Of the questions have been about these two products. The H2O2
> >should
> > > be as strong as you can get. I use 50% when I can get it. For those of
> >you
> > > in the larger cities--one source was from a company that manufactures
> >faded
> > > jeans. If you will contact a chemical company in your area, you can
> >usually
> > > presuade them to give you one of their customers that buys in volumne
so
> > > that you may go to them and convince them to sell you a small
quantity.
> >The
> > > beauty shops have atleast 30% which will work but at a slower rate.
> > >
> > > The HCL is the common muratic acid that you get at building supply
> >stores
> >or
> > > swimming pool supplies.
> > >
> > > I have a site now for this but it has no information on it. I will
getup
> >a
> > > page or two and post the URL.
> > >
> > > Billy Dean Ward
> > >
> > > Billy Dean Ward
> > >
> > >
> > > >From: "Mike Baker" <k7dd@qwest.net>
> > > >To: "Billy Ward" <billydeanward@hotmail.com>
> > > >Subject: Re: [AMPS] Making PC boards/Silkscreen
To: <amps@contesting.com>
> > > >Date: Fri, 13 Jul 2001 08:05:13 -0700
> > > >
> > > >Hello Billy,
> > > > Well, add my name to the list of folks interested in your
method.
> >I
> > > >haven't done PC boards in years because I hated the BS or waiting for
> >the
> > > >board to etch or having it clean off the board because the resist
> >wasn't
> > > >all that good, etc. If I could make professional looking boards in
my
> >back
> > > >yard I would be interested.
> > > > BTW, I know where to get the Acid (pool acid) locally but H2O2
> >that
> > > >you get at the drug store is only 1 or 2 percent at most. Even the
> >type
> > > >use by hair dressers is only maybe 5% and high percentage stuff is
> >toxic
> > > >and dangerous (the germans used it as the oxidizer in the ME262
rocket
> > > >plane in WW2 !! ) so please clairfy if you will.
> > > > Thanks in advance,
> > > >Mike Baker K7DD
> > > >k7dd@qwest.net
> > > > ----- Original Message -----
> > > > From: Billy Ward
> > > > To: amps@contesting.com
> > > > Sent: Thursday, July 05, 2001 4:04 PM
> > > > Subject: [AMPS] Making PC boards/Silkscreen
> > > >
> > > >
> > > > Greetings Carl,
> > > >
> > > > It would probably take over an hour to author a letter telling
> >exactly
> > > >how to do the silkscreen method of making PC boards. However, if
there
> >are
> > > >enough in the group that would be interested in learning how, I could
> >take
> > > >the time to write about it Many years ago, I did a demo for a Ham
Radio
> > > >Club where I started with the tape-up layout and produced a finished
> >etched
> > > >and cleaned ready-to-use 4" X 6" board in 16 minutes flat.
> > > >
> > > > I am planning a website devoted to that task in the near
> >furture--say
> >by
> > > >Fall. At that time, I am going to be offering all of the supplys
> >necessary
> > > >for the job. Interest shown by this group might be somewhat of a
> >measure
> >of
> > > >whether I should continue with my plans.
> > > >
> > > > I will tell you that the ferric chloride method is something that
> >you
> > > >will throw rocks at when you learn about the etchant that I use. It
> >has
> >a
> > > >couple of requirements that must be strictly adherred to and other
than
> > > >that it is superior to any methods that I have come across:
> > > >
> > > > It must be well ventilated!!!!!!!!!!!!!!!!!!!!!!!
> > > > It must not get too hot!!!!!!!!!!!!!!!!!!!!!!!!!!
> > > >
> > > > The following solution requires NO heating, NO bubbling, No
> >agitation!
> > > >
> > > > 1-part H2O2 (Hydrogen Peroxide)
> > > > 1-part Muratic acid (Hydrochloric Acid)
> > > > 8-parts H2O (water)
> > > >
> > > > The boards are suspended in the solution and the reaction causes a
> > > >thermogenic reaction and heats the solution. It must not get above
155
> >F
> > > >or it will boil out of the etching tank--even if it is tall. Adding
a
> >cup
> > > >of Amonium Hydroxide will raise the danger point to about 187 F which
> >is
> > > >easier to work with.
> > > >
> > > > But if you get your hands in the solution a transdermal thing
will
> > > >happen and eventually you will have Amonium
> > > > Chloride (from the Amonium Hydroxide reacted with Hydrochloric
Acid)
> > > >get into your urine and you'll flunk a U/A for methamphetamine.
> > > >
> > > > In a fresh solution that used gallons as the measurements=10
gallons
> > > >total, I could etch 24 4" X 6" single-sided, 2-OZ
> > > > boards in 3 minutes and 20 seconds.
> > > >
> > > > To refresh the solution, add H202!
> > > >
> > > > Billy Dean Ward
> > > >
> > > > ----- Original Message -----
> > > > From: carl seyersdahl
> > > > Sent: Thursday, July 05, 2001 12:21 PM
> > > > To: Billy Ward; amps@contesting.com
> > > > Subject: Re: [AMPS] Making tubes
> > > >
> > > > I'm not exactly crazy about making my own tubes, but I do like
to
> >make
> > > >a pc board now and then. Can you tell me where I can get info on the
> > > >'silkscreen " method making pc boards. It would likely be a big
> >improvement
> > > >over what I've been doing with a magic marker and ferric chloride.
> >thanks
> > > > carl / kz5ca
> > > > ----- Original Message -----
> > > > From: Billy Ward
> > > > To: amps@contesting.com
> > > > Sent: Thursday, July 05, 2001 2:06 PM
> > > > Subject: [AMPS] Making tubes
> > > >
> > > >
> > > >
> > > > Greetings Group,
> > > >
> > > > I will ask this question at the chance of being made to look
> > > >ignorant!
> > > >
> > > > With the high price of tubes, I wonder if anyone has ever
> >invisioned
> > > >a homebrew project to actually make the tube from scratch? I know
that
> >it
> > > >would be a little more than the average ham is used to working with
but
> >why
> > > >could we not use something such as stainless steel tubing and come up
> >with
> > > >a decent power transmitting tube. After all, someone once did that!
> > > >
> > > > We all know approximately what is needed and some of the
group,
> >I
> >am
> > > >sure, may have worked for places such as Eimac etc. and have a lot of
> > > >knowledge of what goes into such a task.
> > > >
> > > > Sometimes things like this is MUCH more difficult than meets
the
> >eye
> > > >and on the other hand, some things are dirt simple and just appear to
> >be
> > > >difficult. Like making pc boards from scratch--some would not think
of
> >it
> > > >and others like me can turn one out from drawing to board in 30-45
> >minutes
> > > >using the silk-screen method at the kitchen sink.
> > > >
> > > > Billy Dean Ward
> > > >
> > > >
> > >
> >
>--------------------------------------------------------------------------
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> > > >
> > > >
> > > >
> > > >
> > >
> >
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> > > >
> > >
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> > >
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