Good idea, I see no reason why it wouldn't work. I'm going to try it
myself, I'm from AUS and H2O2 is just too expensive here
myself, I'm from AUS and H2O2 is just too expensive here
--- In Homebrew_PCBs@yahoogroups.com, Kerry Koppert wrote:
>
> I live in a small largely agricultural country any chemical is
difficult
> to obtain (unless it has a household or agricultural use). I'd like to
> try hydrochloric acid and hydrogen peroxide as an etchant and I can
buy
> HCl in the hardware store (for cleaning concrete) but H2O2 is a little
> more difficult $25 / litre for 35% plus hazardous goods freight from
> 300Km away. Sodium Percarbonate is cheap and readily available as a
> cleaning agent. In solution Sodium Percarbonate becomes sodium
carbonate
> and hydrogen peroxide. It seems to me that a mixture of hydrochloric
> acid and sodium percarbonate would end up as hydrochloric acid,
hydrogen
> peroxide, salt and carbon dioxide. Has anyone tried percarbonate in
this
> way as an etchant?
>