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RE: [TCML] hyperbaric sparkgaps

DC, it is weazle@xxxxxxxxxxxxxx according to his website http://www.hurontel.on.ca/~weazle/index.html.

Mark Stolz
Pearland, TX
http://teslacoils4christ.org/

> Date: Tue, 29 Jan 2008 14:31:52 -0700
> From: resonance@xxxxxxxxxxxx
> To: tesla@xxxxxxxxxx
> CC: 
> Subject: [TCML] hyperbaric sparkgaps
> 
> 
> 
> Chip:
> 
> Do you or anyone on the List know Gary Weazel's email address?  I want to
> talk with him regarding some large hyperbaric gaps I'm designing.
> 
> Dr. Resonance
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> > One of the better etchers is ammonium persulfate,
> > you can pick it up of Ebay cheap. We used this
> > when making PCB's in the research lab I worked
> > at. Much safer to use that Ferric chloride, which
> > we used before and switched. Rubber gloves and
> > safety glasses are used but if it splashes on the
> > skin, it does not cause any serious damage and
> > can be washed off easily later. In fact, you may
> > not know you have it on your skin and later a
> > stain will show up where it was in contact with.
> >
> > Use of an acid like HCl is really bad and
> > dangerous. You cannot control the process and it
> > under cuts the lands, plus it is nasty stuff and
> > cleanup is messy. I have never heard of using an
> > acid like that (or Nitric) ever for etching a
> > circuit board. I have never heard of using these acids for PCB manufacture
> >
> > Hydrogen Peroxide is an oxidizer and in higher
> > concentrations, it is very dangerous and can
> > cause explosions! It is used as a component of
> > some rocket fuels in higher levels. It can burn
> > the skin on contact and react with other
> > chemicals and cause fires, explosions, etc. Do
> > not play with the industrial stuff unless you really know what you are
> > doing.
> > The concentrated solution was used in making the
> > bombs for the muslim attacks in the UK subways
> > last year. Big brother pays attention to who buys
> > the concentrated stuff. Plus it has a crappy shelf life once it is opened.
> >
> > Frank
> >
> > At 07:34 AM 1/29/2008 -0600, you wrote:
> >>Hi all,
> >>
> >>I have absolutely zero experience with building PC boards
> >>and since my patience doesn't usually hold up too well work-
> >>ing with tiny things and my 45 year old eyes don't see things
> >>up close anymore w/out visual correction, I kind of doubt
> >>that I ever will at this point. However, the one thing that I do
> >>realize from reading these threads on how to etch the tracks
> >>is that these are some quite dangerous chemicals that are used
> >>for this purpose. 30-35% hydrochloric acid solution is very
> >>strong (the swimming pool supply muriatic acid is approximately
> >>the same strength hyrdocholric acid solution). Muriatic acid re-
> >>leases a visible suffocating vapor when the cap is removed and
> >>the liquid acid will quickly attack aluminum or concrete. The
> >>H2O2 (hydrogen peroxide) solution that you purchase at your
> >>local drug store is 3% peroxide and 97% water! The extra oxy-
> >>gen atom makes the normally stable water molecule very unstable
> >>to release the rogue oxygen atom. A 30% peroxide solution would
> >>be very corrosive and would severely bleach and burn skin upon
> >>contact.I've heard that industrial strength 90% peroxide solution
> >>poured on combustible material will cause spontaneous ignition!
> >>Just a safety note - any chemical that can etch copper will likely
> >>also "etch" human flesh! Be careful ....
> >>
> >>David Rieben
> >>
> >>
> >>----- Original Message ----- From: "Ale¹ Chlubný" <chluba1@xxxxxxxxxxx>
> >>To: "'Tesla Coil Mailing List'" <tesla@xxxxxxxxxx>
> >>Sent: Tuesday, January 29, 2008 4:52 AM
> >>Subject: RE: [TCML] PC boards
> >>
> >>
> >>>I'm using hydrochloride acid with hydrogen peroxide but with some
> >>>modifications.
> >>>Cool down concentated 30-35% HCl acid, it's required if you are going to
> >>>etch large boards or you have not a lot of acid, because reaction are
> >>>exothermic and high temperature isn't good for peroxide. Put the acid
> >>> and PC
> >>>board into plastic container and add a few drops of concentrated 30%
> >>>peroxid. Don't add peroxid directly to PC board but in distant corner
> >>> and
> >>>move with container to mix the solution (locally increased concentration
> >>> of
> >>>peroxid can be dangerous for PC board). You can drive speed of reaction
> >>> by
> >>>adding more peroxid. If you aren't overshoot amount of peroxide, cooper
> >>> will
> >>>dissolve fast but without any bubbles and fumes. If it bubbles, it can
> >>> be
> >>>due too fast reaction or high temperature. In this cases you can try to
> >>> cool
> >>>down the solution.
> >>>This method is the fastest and provides more capacity, with 1 bottle of
> >>> acid
> >>>you can make a lot of PCB.
> >>>
> >>>Ales.
> >>>
> >>>
> >>>>-----Original Message-----
> >>>>From: tesla-bounces@xxxxxxxxxx
> >>>>[mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of Scott Bogard
> >>>>Sent: Monday, January 28, 2008 10:17 PM
> >>>>To: tesla@xxxxxxxxxx
> >>>>Subject: Re: [TCML] PC boards
> >>>>
> >>>>
> >>>>Thanks guys,
> >>>>      I am already using perf board, but I have acquired
> >>>>enough parts to make 5 drivers, so I figured PC board would
> >>>>be the way to go.  also does anybody have any experience with
> >>>>this etching solution, it sounds pretty good to me, as I
> >>>>already have all the ingredients.
> >>>>http://www.instructables.com/id/Stop-using-Ferric-Chloride-etc
> >>>>hant!--A-better-etc/
> >>>>Thanks again.
> >>>>
> >>>>Scott Bogard.
> >>>>
> >>>>BunnyKiller wrote:
> >>>> > As far as perf boards go, they are fine if you like wires. I prefer
> >>>> > the perfboard with the square copper tabs on the bottom. It
> >>>>allows you
> >>>> > to place components and then use solder bridges to route the path
> >>>> > along the squares. If you need to correct a path, simply
> >>>>heat up the
> >>>> > solder in the area to be corrected and tap the board to
> >>>>remove solder.
> >>>> > The only disadvantage to this method is the required amounts of
> >>>> > solder....
> >>>> >
> >>>> > Scot D
> >>>> >
> >>>> >
> >>>> >
> >>>> > Peter Terren wrote:
> >>>> >
> >>>> >> You can still make some pretty significant things on
> >>>>perfboard with
> >>>> >> point to point wiring.
> >>>> >> Here is a packed mag-lev board with 4 IC's that still runs
> >>>>fine after
> >>>> >> 2 years museum use.
> >>>> >>
> >>>>http://tesladownunder.com/Magnetic%20levitation.htm#Magnetic%20Levita
> >>>> >> tion
> >>>> >>
> >>>> >>
> >>>> >> Even more extreme is this completely point to point art
> >>>>piece. There
> >>>> >> is no perf board, everything is point to point and
> >>>>supported by the
> >>>> >> connections to the supply rail. Still works after 20 years. 8 IC's
> >>>> >> and perhaps 100 components
> >>>> >> http://tesladownunder.com/Electronics.htm#Pyramid
> >>>> >>
> >>>> >> Peter
> >>>> >>
> >>>> >>
> >>>> >
> >>>> >
> >>>> > _______________________________________________
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> >>>> > Tesla@xxxxxxxxxxxxxx
> >>>> > http://www.pupman.com/mailman/listinfo/tesla
> >>>> >
> >>>> >
> >>>>
> >>>>
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> >>
> >>_______________________________________________
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> 
> 
> Dr. Resonance
> 
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