Jim:
Your are probably correct.
It's just that when you keep reading the same thing over, and over, and
over, and over again,
you tend to "fog over" and yearn to log onto this forum and get
enlightened on some new
material.
But, I guess I'm just an optimist.
There is a cure for the problem you brought up concerning my posts to
this forum:
Just don't read my posts..........hit the delete key immediately upon
seeing my name.
Perhaps we can do this by mutual agreement??
Roland F. Harriston, P.D.
∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗
Jim wrote:
>
>
>
> Roland ... you seem to have difficulty reading an e-mail as written !!!
> Jim KI6MZ
>
> On 3/5/2011 10:52 PM, Roland F. Harriston wrote:
> > I think you have things a little screwed up.
> > I think that you (if you actually do) purchase muriatic acid, which is
> > actually
> > about 27% (30 Baume) hydrochloric acid from your
> > pool supply store, or local building supply or super market, and you
> > most likely purchase hydrogen PEROXIDE
> > (about 2 or 3 %) from your local drug/variety store.
> >
> > Wow! this thread gets more silly as it progresses.
> >
> > Roland F. Harriston, P.D.
> > ∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗
> >
> >
> > Jim wrote:
> >
> >>
> >>
> >> I buy and use 27% hydrogen peroxide sold at the pool supply store ...
> >> It seems some people don't like green hair caused by chlorine that most
> >> people
> >> put in their pools. The people that I have questioned about using 27%
> >> H2O2 in
> >> their pool say it is better than the chlorine.
> >> One gallon of 27% H2O2 costs $19
> >> I save my used etch (it is dark green) and add about 7 milliliters of
> >> 27% H2O2
> >> to 300 ml of used etch to etch a board.
> >> Jim KI6MZ
> >>
> >> On 3/5/2011 4:40 PM, Harvey White wrote:
> >>> On Sat, 5 Mar 2011 15:54:37 -0800 (PST), you wrote:
> >>>
> >>> Stuff they sell in beauty shops is designed to be nice to your scalp,
> >>> so has (most likely) extra ingredients, so you now will have long
> >>> silky flexible PC boards that shine as if this was your normal PC
> >>> board color.
> >>>
> >>> I just buy the cheap stuff at the drugstore....
> >>>
> >>> Harvey
> >>>
> >>>
> >>>> Well heck .. this one is all blow outta the water.
> >>>> I went to the beauty supply place ..
> >>>> Theirs is 10, 20 and 30 VOL .. dangit ..
> >>>> AND .. to top that off it has other ingredients ..
> >>>> Best I could find was hydrogen peroxide , water , phosphuric acid.
> >>>> Though thinking back on the older days of REAL Coke Cola ..
> >>>> I wonder if the phosphuric acid / H2O2 mix by itself would etch ?
> >>>> OK .. where is that fellow .. that was talking chemistry and
> molarity.
> >>>> ok .. found his email .. JROD .. Hope you pipe in here .. :)
> >>>>
> >>>> Cant figure it out myself .. I did try .. need to learn more
> >> chemistry .
> >>>> Dont know if phosphuric acid is above copper on a redox table ..
> >>>>
> >>>> Oh well .. on to more studying .. and hope that JROD sees this
> >>>> and after his laughing .. replies .. lol
> >>>>
> >>>> Randy - N2CUA
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> ________________________________
> >>>> From: Randy S.<rj3819@...
> <mailto:rj3819%40yahoo.com><mailto:rj3819%40yahoo.com>>
> >>>> To: Homebrew_PCB<homebrew_pcbs@yahoogroups.com
> <mailto:homebrew_pcbs%40yahoogroups.com>
> >> <mailto:homebrew_pcbs%40yahoogroups.com>>
> >>>> Sent: Sat, March 5, 2011 4:47:21 PM
> >>>> Subject: [Homebrew_PCBs] Hydrogen peroxide mixing
> >>>>
> >>>>
> >>>> I checked with the beauty shop in town ..
> >>>> they have 10 , 20 , 30 % peroxide.
> >>>>
> >>>> I can get the 10 .. I have several bottles of 3%.
> >>>>
> >>>> Can I mix equal amounts of say, 10% and 3%
> >>>> and end up with , 6.5% ? after starting those
> >>>> you tube video lectures on chemistry, I guess
> >>>> it might not be the case .. though it is the same
> >>>> chemical in this case.
> >>>>
> >>>> Randy - N2CUA
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> [Non-text portions of this message have been removed]
> >>>>
> >>>>
> >>>>
> >>>> ------------------------------------
> >>>>
> >>>> Be sure to visit the group home and check for new Links, Files, and
> >> Photos:
> >>>> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >>>>
> >>>>
> >>>>
> >>>
> >>> ------------------------------------
> >>>
> >>> Be sure to visit the group home and check for new Links, Files, and
> >> Photos:
> >>> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >>>
> >>>
> >>>
> >>>
> >>>
> >>
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> > Be sure to visit the group home and check for new Links, Files, and
> Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
> >
>
>
[Non-text portions of this message have been removed]