Homebrew PCBs

Here's a slightly odd question... well, it is Sunday night :)

I was thinking about mixing up a cupric chloride etch bath. Thing is,
while I have a ton of concrete cleaner (hydrochloric acid) and raw
copper (in the form of old copper wire), I don't have any hydrogen peroxide.

Now as I understand it, the H2O2 is used as a source of free oxygen to
accelerate the reaction between the HCl and Cu. Out of curiosity, would
it be possible to start a cupric chloride etching bath by bubbling air
through the HCl while adding copper (possibly heating the HCl to
accelerate the reaction)?

-- 
Phil.
ygroups@...
http://www.philpem.me.uk/