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

--- In Homebrew_PCBs@yahoogroups.com, Anthony Toft <toftat@c...> wrote:
...
> > I suggest you mix a smallish batch - 1 L 3% H2O2 + .5 L 30% HCL to
> > start. You will need a fair amount of 30% H2O2 to regenerate it so
> > smaller is better.
>
> Where can I get 30% H2O2 from? Will they have it a home depot? I am
> hoping to reuse this stuff over and over, to avoid trips to the waste
> disposal...

In Seattle, I found it at a Lab Supply place in the phone book but it
wasn't as cheap as others have reported ($15/4 oz or $40/gal).

>
> This is not an option, it is an open topped flat container that I got in
> the radioshack pcb etching kit.
>

As others have reported, a cereal box container will do fine but it is
big - 1 Gal. Mine was $6.

If etching the board in the horizontal position, be sure to flip it
over several times as well as agitate.

> > Note that this brew attacks some plastics - I had left 2 air "stones"
>
> :( is PET (or LDPE) OK?
>

my container is PET, I believe. Neither the air stones nor the
trimmer line packaging say what it it.

Phil