Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

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@...>
>To: Homebrew_PCB <homebrew_pcbs@yahoogroups.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
>
>
>