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[Homebrew_PCBs] HCl Etchant Question

2010-03-22 by Mark Lerman

As I understand it, the H2O2 is used to provide oxygen to the HCl, 
but using 3% peroxide slows it down because of dilution of the 
HCl.  Has anyone tried just bubbling some oxygen through the HCl? Or 
is this just too dangerous to contemplate?? Thought I'd ask before 
trying. <smile>

Mark

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