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Subject: Re: [Homebrew_PCBs] Question about etching pcb's

From: Norm <w6nim@...>
Date: 2018-04-09

As a beauticians product, it IS a bleach - HAIR bleach, as the writer specified.  It is not LAUNDRY bleach.  Just as not all acids are HCl, not all bleaches are chlorine based. 

Norm  w6nim



On 4/8/2018 5:38 PM, alienrelics@... [Homebrew_PCBs] wrote:
 

Please do not call it "bleach", it is not chlorine, it is hydrogen peroxide.


Someone coming across this thread may be confused by this. I have no idea what would happen if chlorine bleach and hydrochloric acid were mixed.

Steve Greenfield AE7HD


---In Homebrew_PCBs@yahoogroups.com, <kabowers@...> wrote :

Look for clear hair bleach. I think it's around 12% (40 deg. Baume?);
strong enough to burn your bare hands.
I understand janatorial supply shops have it even stronger, but it
starts to get dangerous and these days may find the police checking
you out.

I got mine from the local Sally Beauty Supply.
In this part of the US they seem to show up
near WalMarts.




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