Homebrew PCBs

bebx2000 wrote: 
> Maybe a better source of oxygen is sodium perborate. A while back, I
> accidentally stumbled upon this site while searching the topic of PCB
> etching,

Thanks for posting this, I have seen this fast etchant for sale around
here too, and normally, because my curiosity i rush on finding what is
it made off, how it works and other sources for getting the same but
this time i guess am too busy and just forgot. 
The site has great pics and descriptions too. Easy nice etchant.

Time ago i search for other oxidizers sources from common household
things. I saw the 'oxy action' products for laundry cleaning, with 30%
sodium percarbonate, making it 10% hydrogen peroxide 20% sodium
carbonate and 70% of unknown, cheap but useless to try. Also saw a
swimming pool 'oxy choke' made of Potassium peroxymonosulfate (not
persulfate) not cheap or convincing to try. But the sodium perborate
seem a good solid option. I will search if i can find the sodium
perborate here too.

But for me is pure curiosity. My bubled CuCl works nice. And i even got
who offered me 90% (300vol) hydrogen peroxide for free. After many
threads here about concentrated oxidizers i wonder about the lack of
replies to this. Sodium perborate was pointed here once 5 years ago
without useful reply. It's available on ebay too.

Sim�o