Homebrew PCBs

Interesting. From this site 

http://catmacey.wordpress.com/projects/making-pcbs-with-simple-tools/etching-the-board/

it looks like sodium perborate tetrahydrate can be used with HCl/muriatic acid to etch boards as well. I sort of like this idea better than using HCl and H2O2. 


--- In Homebrew_PCBs@yahoogroups.com, "bebx2000" <bebx2000@...> wrote:
> Sage,
> 
> Although it isn't one of your run-of-the-mill household products, try sodium perborate tetrahydrate. It (or one of the variants) is one of the ingredients in Oxy-clean. It is a stable, solid source of active oxygen prepared by reaction of sodium borate with hydrogen peroxide. When you dissolve it in water it releases back hydrogen peroxide; hence, it is a solid form of hydrogen peroxide. The monohydrate version yields about 32% hydrogen peroxide; tetrahydrate, about 15%. So all you do is mix up a saturated solution and you have fresh, high value hydrogen peroxide. Monohydrate goes into solution faster. My notes on this show that the commercial detergents contain only about 15% of sodium perborate by weight.
> 
> You can buy a 6lb. pail for $12.00 at
> 
> http://www.chemistrystore.com/Sodium_Perborate-Sodium_Perborate_6lbs.html
> 
> A supplier on eBay also sells a 1lb.jar of lab grade for $9.00
> 
> Baxter
> 
> --- In Homebrew_PCBs@yahoogroups.com, "Dave Sage" <davesage12@> wrote:
> >
> > Just had a thought. For you guys experimenting with all kinds of household
> > chemicals, I'm wondering if the peroxide could be substituted for one of the
> > supposed Oxygen generating washing additive powders  like "Oxy Clean".
>