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RE: [TCML] hyperbaric sparkgaps
I think this is a case of two identities being melded together. I also published details of an above-ambient pressure gap, naming mine a "vortex gap" for the geometry of its airflow. Details at http://www.laushaus.com/tesla/vortexgap.htm
Regards, Gary Lau
MA, USA
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Mark W. Stolz
> Sent: Wednesday, January 30, 2008 9:13 AM
> To: Tesla Coil Mailing List
> Subject: 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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> > >>>>relife_012008_______________________________________________
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> > >>>
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> > >>
> > >>_______________________________________________
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> >
> >
> > Dr. Resonance
> >
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>
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