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

----- Original Message -----
From: "Bob_xyz" <bob_barr@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, January 03, 2006 4:37 PM
Subject: [Homebrew_PCBs] Re: CUCL Temperature , etch time ?????


> H2O2 is available at beauty supply stores in concentrations up to
> 40%. (It's hair bleach.) It's sold in 1 quart bottles for US$5 or
> so. I get mine at Sally Beauty Supply. Some beauty supply shops only
> sell to licensed hair stylists but some, like Sally, do sell to the
> general public.
>
> Buying in small quantities shouldn't raise any red flags. I don't
> think I'd want to try buying a 55 gallon drum of it, though. :=)

Mixed with acetone at freezing point it makes triacetone triperoxide. It's
popular with suicide bombers.

Leon