Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: Re: [Homebrew_PCBs] How to dispose of etchant?
From: "Leon Heller" <leon355@...>
Date: 2010-01-05
----- Original Message -----
From: "DJ Delorie" <dj@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, January 05, 2010 5:26 PM
Subject: Re: [Homebrew_PCBs] How to dispose of etchant?
>
> "Leon Heller" <leon355@...> writes:
>> > The FeCl etchant can be rejeuvenated with a little Hydrochloric acid;
>> > eventually it also becomes CuCl etchant.
>>
>> + H2O2, otherwise it will be cuprous chloride which doesn't etch.
>
> What happens if you dump spent FeCl etchant into a CuCl ethant bath?
It'll work OK with oxygenation.
Leon