Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

----- Original Message -----
From: "Kamal Shankar" <kbshankar2000@...>
To: "Homebrew_PCBs" <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, July 05, 2007 7:41 AM
Subject: [Homebrew_PCBs] Etchants is use


>I would be interested in getting a good idea of what
> are the etchants being used.
>
> AFAIK, they are :
>
> 1. Hot FeCl3
> 2. Muriatic Acid + Hydrogen Peroxide
> 3. Copper chloride
>
> And I got that hopefully, in order of popularity.
>
> If all these work, the 2nd choice seems to be easier
> to get and use; so why is the first so popular.
> I myself use it, and the reason being people I know
> who do it professionally use it too ?
>
> What's the reason? Financial? (The 2nd choice is a
> little bit cheaper than the first) Speed? Ease of
> storage?
>
> I would like to find it out from you, and do give
> feedback of what all etchants you used and what you
> finally settled with and why.

FeCl3 is easier to obtain than high strength H2O2, although HCl is easy to
get old of (it's used for cleaning drains and brickwork).

Leon