Homebrew PCBs

----- Original Message ----
From: Lez <lez.briddon@...>>
> I just etched my PS board this morning.  Not too bad for a first try:
>  http://members.lsol.net/gop4evr/unlinked/psboard.jpg
>
>  I used homebrew etchant (2:1 hydrogen peroxide/muriatic acid).


Can someone explain what this really is?


-----------------

(Reading from the bottles)
Muriatic acid:
Hydrogen Chloride -- 31.45% (hydrochloric acid)
Inert ingredients -- 68.55%
This mixture is sold as a farm and industrial solvent/cleaner.  It is used in swmming pools (scary, huh?), and for etching concrete, among many other uses.

Hydrogen peroxide:
"Hydrogen Peroxide Topical Soulution"
"Hydrogen Peroxide (stabilized) 3%"
This is sold here as a solution for cleaning minor cuts and other home medical uses.  I had to use it when I was younger to irrigate an infected ear (not a happy memory).



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