Forgot a few point.
You can use plastic container.
Air bubble improve etching time.
And always put HCl into water, not water into HCl. Dissociation of an acid into water is
exothermic (particularly with nitric and sulfuric acid, less with HCl). If you put water
in acid, water can get to the boiling point and can splash you.
--- On Fri, 9/5/08, liquias <liquias@...> wrote:
From: liquias <liquias@...>
Subject: [Homebrew_PCBs] HCl H2O2 etch
To: Homebrew_PCBs@yahoogroups.com
Date: Friday, September 5, 2008, 10:24 PM
Hi,
I got some HCl at 32% and H2O2 at 33% concentrations from our chemistry
supply shop.
How do I use these materials in order to etch?
Do i need a special container in order to etch?
Do i need an air system inside the tank?
(What are the quantities, and in what order should i mix everything - I
dont know much about chemistry... )?
Any help will be woderful...
Thanks in advance -
Liquias.
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